mfd: bcm2835-pm: Remove MODULE_LICENSE in non-modules

Since commit 8b41fc44 ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.

So remove it in the files in this commit, none of which can be built as
modules.
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230224150811.80316-22-nick.alcock@oracle.com

drivers/mfd/bcm2835-pm.c

@@ -123,4 +123,3 @@ module_platform_driver(bcm2835_pm_driver);
 
 MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
 MODULE_DESCRIPTION("Driver for Broadcom BCM2835 PM MFD");
-MODULE_LICENSE("GPL");