remove MAP_32 from non-x86 archs

both kernel and glibc define it only on x86(_64).

arch/arm/bits/mman.h

@@ -15,7 +15,6 @@
 #define MAP_FILE       0x00
 #define MAP_ANON       0x20
 #define MAP_ANONYMOUS  MAP_ANON
-#define MAP_32BIT      0x40
 #define MAP_NORESERVE  0x4000
 
 #define POSIX_MADV_NORMAL       0

arch/microblaze/bits/mman.h

@@ -15,7 +15,6 @@
 #define MAP_FILE       0x00
 #define MAP_ANON       0x20
 #define MAP_ANONYMOUS  MAP_ANON
-#define MAP_32BIT      0x40
 #define MAP_NORESERVE  0x4000
 
 #define POSIX_MADV_NORMAL       0

arch/powerpc/bits/mman.h

@@ -15,7 +15,6 @@
 #define MAP_FILE       0x00
 #define MAP_ANON       0x20
 #define MAP_ANONYMOUS  MAP_ANON
-#define MAP_32BIT      0x40
 #define MAP_NORESERVE  0x40
 
 #define POSIX_MADV_NORMAL       0