Change the "/**" beginning of comment to the common "/*" comment
since the comment is not in kernel-doc format. This prevents a
kernel-doc warning:

arch/arm/mm/init.c:422: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 * update_sections_early intended to be called only through stop_machine

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Cc: patches@armlinux.org.uk
---
KernelVersion: 0dd3ee31125508cd67f7e7172247f05b7fd1753a

 arch/arm/mm/init.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -- a/arch/arm/mm/init.c b/arch/arm/mm/init.c
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -418,7 +418,7 @@ static void set_section_perms(struct sec
 
 }
 
-/**
+/*
  * update_sections_early intended to be called only through stop_machine
  * framework and executed by only one CPU while all other CPUs will spin and
  * wait, so no locking is required in this function.