pinctrl: sirf: make core support explicitly non-modular

The Makefile currently controlling compilation of this code is:

drivers/pinctrl/sirf/pinctrl-sirf.o
--> drivers/pinctrl/sirf/Makefile:obj-y += pinctrl-sirf.o

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: Linus Walleij <[e-mail]>
Cc: Rongjun Ying <[e-mail]>
Cc: Yuping Luo <[e-mail]>
Cc: Barry Song <[e-mail]>
Cc: [e-mail]
Signed-off-by: Paul Gortmaker <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/sirf/pinctrl-sirf.c

···
 /*
  * pinmux driver for CSR SiRFprimaII
  *
+ * Authors:
+ *	Rongjun Ying <[e-mail]>
+ *	Yuping Luo <[e-mail]>
+ *	Barry Song <[e-mail]>
+ *
  * Copyright (c) 2011 - 2014 Cambridge Silicon Radio Limited, a CSR plc group
  * company.
  *
···
  */
 
 #include <linux/init.h>
-#include <linux/module.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
···
 	return sirfsoc_gpio_probe(np);
 }
 subsys_initcall(sirfsoc_gpio_init);
-
-MODULE_AUTHOR("Rongjun Ying <[e-mail]>");
-MODULE_AUTHOR("Yuping Luo <[e-mail]>");
-MODULE_AUTHOR("Barry Song <[e-mail]>");
-MODULE_DESCRIPTION("SIRFSOC pin control driver");
-MODULE_LICENSE("GPL");