arm64: Fix compat types affecting struct compat_stat

The compat_stat structure doesn't match the arch/arm/ struct stat
definition. This patch fixes the compat types and struct compat_stat
definition accordingly.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>

arch/arm64/include/asm/compat.h

@@ -35,14 +35,16 @@ typedef s32		compat_clock_t;
 typedef s32		compat_pid_t;
 typedef u32		__compat_uid_t;
 typedef u32		__compat_gid_t;
+typedef u16		__compat_uid16_t;
+typedef u16		__compat_gid16_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
-typedef u32		compat_mode_t;
+typedef u16		compat_mode_t;
 typedef u32		compat_ino_t;
 typedef u32		compat_dev_t;
 typedef s32		compat_off_t;
 typedef s64		compat_loff_t;
-typedef s16		compat_nlink_t;
+typedef s32		compat_nlink_t;
 typedef u16		compat_ipc_pid_t;
 typedef s32		compat_daddr_t;
 typedef u32		compat_caddr_t;
@@ -50,9 +52,11 @@ typedef __kernel_fsid_t	compat_fsid_t;
 typedef s32		compat_key_t;
 typedef s32		compat_timer_t;
 
+typedef s16		compat_short_t;
 typedef s32		compat_int_t;
 typedef s32		compat_long_t;
 typedef s64		compat_s64;
+typedef u16		compat_ushort_t;
 typedef u32		compat_uint_t;
 typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
@@ -72,20 +76,20 @@ struct compat_stat {
 	compat_dev_t	st_dev;
 	compat_ino_t	st_ino;
 	compat_mode_t	st_mode;
-	compat_nlink_t	st_nlink;
-	__compat_uid32_t	st_uid;
-	__compat_gid32_t	st_gid;
+	compat_ushort_t	st_nlink;
+	__compat_uid16_t	st_uid;
+	__compat_gid16_t	st_gid;
 	compat_dev_t	st_rdev;
 	compat_off_t	st_size;
 	compat_off_t	st_blksize;
 	compat_off_t	st_blocks;
 	compat_time_t	st_atime;
-	u32		st_atime_nsec;
+	compat_ulong_t	st_atime_nsec;
 	compat_time_t	st_mtime;
-	u32		st_mtime_nsec;
+	compat_ulong_t	st_mtime_nsec;
 	compat_time_t	st_ctime;
-	u32		st_ctime_nsec;
-	u32		__unused4[2];
+	compat_ulong_t	st_ctime_nsec;
+	compat_ulong_t	__unused4[2];
 };
 
 struct compat_flock {