firmware: arm_scmi: Replace asm-generic/bug.h with linux/bug.h

linux/bug.h includes asm-generic/bug.h already and hence replacing
asm-generic/bug.h with linux/bug.h will not regress any build.
Also, it is always better to avoid header file inclusion from asm-generic
if possible.

Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Tanzir Hasan <tanzirh@google.com>
Link: https://lore.kernel.org/r/20231226-shmem-v1-1-ea15ce81d8ba@google.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Author: Tanzir Hasan

drivers/firmware/arm_scmi/shmem.c

@@ -10,7 +10,7 @@
 #include <linux/processor.h>
 #include <linux/types.h>
 
-#include <asm-generic/bug.h>
+#include <linux/bug.h>
 
 #include "common.h"