arm: update in-source documentation references

The Arm documentation has moved to Documentation/arch/arm; update
references within arch/arm to match.

Cc: Russell King <[e-mail]>
Cc: Alim Akhtar <[e-mail]>
Cc: Patrice Chotard <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Jonathan Corbet <[e-mail]>

arch/arm/Kconfig

···
 	  Say Y to include VFP support code in the kernel. This is needed
 	  if your hardware includes a VFP unit.
 
-	  Please see <file:Documentation/arm/vfp/release-notes.rst> for
+	  Please see <file:Documentation/arch/arm/vfp/release-notes.rst> for
 	  release notes and additional status information.
 
 	  Say N if your target does not have VFP hardware.

arch/arm/common/mcpm_entry.c

···
 /*
  * The public API for this code is documented in arch/arm/include/asm/mcpm.h.
  * For a comprehensive description of the main algorithm used here, please
- * see Documentation/arm/cluster-pm-race-avoidance.rst.
+ * see Documentation/arch/arm/cluster-pm-race-avoidance.rst.
  */
 
 struct sync_struct mcpm_sync;

arch/arm/common/mcpm_head.S

···
  * Created by:  Nicolas Pitre, March 2012
  * Copyright:   (C) 2012-2013  Linaro Limited
  *
- * Refer to Documentation/arm/cluster-pm-race-avoidance.rst
+ * Refer to Documentation/arch/arm/cluster-pm-race-avoidance.rst
  * for details of the synchronisation algorithms used here.
  */
 

arch/arm/common/vlock.S

···
  * Copyright:	(C) 2012-2013  Linaro Limited
  *
  * This algorithm is described in more detail in
- * Documentation/arm/vlocks.rst.
+ * Documentation/arch/arm/vlocks.rst.
  */
 
 #include <linux/linkage.h>

arch/arm/include/asm/setup.h

···
  *  Copyright (C) 1997-1999 Russell King
  *
  *  Structure passed to kernel to tell it about the
- *  hardware it's running on.  See Documentation/arm/setup.rst
+ *  hardware it's running on.  See Documentation/arch/arm/setup.rst
  *  for more info.
  */
 #ifndef __ASMARM_SETUP_H

arch/arm/include/uapi/asm/setup.h

···
  * published by the Free Software Foundation.
  *
  *  Structure passed to kernel to tell it about the
- *  hardware it's running on.  See Documentation/arm/setup.rst
+ *  hardware it's running on.  See Documentation/arch/arm/setup.rst
  *  for more info.
  */
 #ifndef _UAPI__ASMARM_SETUP_H

arch/arm/kernel/entry-armv.S

···
  * existing ones.  This mechanism should be used only for things that are
  * really small and justified, and not be abused freely.
  *
- * See Documentation/arm/kernel_user_helpers.rst for formal definitions.
+ * See Documentation/arch/arm/kernel_user_helpers.rst for formal definitions.
  */
  THUMB(	.arm	)
 

arch/arm/mach-exynos/common.h

···
 #define C2_STATE	(1 << 3)
 /*
  * Magic values for bootloader indicating chosen low power mode.
- * See also Documentation/arm/samsung/bootloader-interface.rst
+ * See also Documentation/arch/arm/samsung/bootloader-interface.rst
  */
 #define EXYNOS_SLEEP_MAGIC	0x00000bad
 #define EXYNOS_AFTR_MAGIC	0xfcba0d10

arch/arm/mach-sti/Kconfig

···
 	help
 	  Include support for STMicroelectronics' STiH415/416, STiH407/10 and
 	  STiH418 family SoCs using the Device Tree for discovery.  More
-	  information can be found in Documentation/arm/sti/ and
+	  information can be found in Documentation/arch/arm/sti/ and
 	  Documentation/devicetree.
 
 if ARCH_STI

arch/arm/mm/Kconfig

···
 	  assistance.
 
 	  A compliant bootloader is required in order to make maximum
-	  use of this feature.  Refer to Documentation/arm/booting.rst for
+	  use of this feature.  Refer to Documentation/arch/arm/booting.rst for
 	  details.
 
 config SWP_EMULATE
···
 	  the CPU type fitted to the system.  This permits binaries to be
 	  run on ARMv4 through to ARMv7 without modification.
 
-	  See Documentation/arm/kernel_user_helpers.rst for details.
+	  See Documentation/arch/arm/kernel_user_helpers.rst for details.
 
 	  However, the fixed address nature of these helpers can be used
 	  by ROP (return orientated programming) authors when creating

arch/arm/tools/mach-types

···
 #   http://www.arm.linux.org.uk/developer/machines/download.php
 #
 # Please do not send patches to this file; it is automatically generated!
-# To add an entry into this database, please see Documentation/arm/arm.rst,
+# To add an entry into this database, please see Documentation/arch/arm/arm.rst,
 # or visit:
 #
 #   http://www.arm.linux.org.uk/developer/machines/?action=new