ACPI: fix menuconfig presentation of ACPI submenu

My fix for a recursive Kconfig dependency caused another issue where the
ACPI specific options end up in the top-level menu in 'menuconfig'. This
was an unintended side-effect of having a silent option between
'menuconfig ACPI' and 'if ACPI'.

Moving the ARCH_SUPPORTS_ACPI symbol ahead of the ACPI menu solves that
problem and restores the previous presentation.

Reported-by: Ard Biesheuvel <[e-mail]>
Fixes: 2c870e61132c (arm64: fix ACPI dependencies)
Signed-off-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/Kconfig

···
 # ACPI Configuration
 #
 
+config ARCH_SUPPORTS_ACPI
+	bool
+
 menuconfig ACPI
 	bool "ACPI (Advanced Configuration and Power Interface) Support"
 	depends on ARCH_SUPPORTS_ACPI
···
 	  The specification is available at:
 	  <http://www.acpi.info>
 	  <http://www.uefi.org/acpi/specs>
-
-config ARCH_SUPPORTS_ACPI
-	bool
 
 if ACPI