[MIPS] <asm/compat-signal.h> needs to include <asm/uaccess.h>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

include/asm-mips/compat-signal.h

@@ -5,6 +5,8 @@
 #include <linux/compat.h>
 #include <linux/compiler.h>
 
+#include <asm/uaccess.h>
+
 static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d,
 	const sigset_t *s)
 {