[U-Boot] [i.MX8MM+CCF 15/41] linux: compat: guard PAGE_SIZE

[Peng Fan]

Some archs defined PAGE_SIZE, such as ARMv8, to avoid build warning,
guard PAGE_SIZE.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 include/linux/compat.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/compat.h b/include/linux/compat.h
index d0f51baab4..c1f8bdf8f2 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -123,7 +123,9 @@ static inline void kmem_cache_destroy(struct kmem_cache *cachep)
 
 #define KERNEL_VERSION(a,b,c)	(((a) << 16) + ((b) << 8) + (c))
 
+#ifndef PAGE_SIZE
 #define PAGE_SIZE	4096
+#endif
 
 /* drivers/char/random.c */
 #define get_random_bytes(...)
-- 
2.16.4