This fixes kernel compilation errors on GCC >= 8.x on old 3.x kernels

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85745

--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -121,7 +121,7 @@
 #define get_user(x,p)							\
 	({								\
 		unsigned long __limit = current_thread_info()->addr_limit - 1; \
-		register const typeof(*(p)) __user *__p asm("r0") = (p);\
+		register typeof(*(p)) __user *__p asm("r0") = (p);\
 		register unsigned long __r2 asm("r2");			\
 		register unsigned long __l asm("r1") = __limit;		\
 		register int __e asm("r0");				\
@@ -158,8 +158,8 @@
 #define put_user(x,p)							\
 	({								\
 		unsigned long __limit = current_thread_info()->addr_limit - 1; \
-		register const typeof(*(p)) __r2 asm("r2") = (x);	\
-		register const typeof(*(p)) __user *__p asm("r0") = (p);\
+		register typeof(*(p)) __r2 asm("r2") = (x);	\
+		register typeof(*(p)) __user *__p asm("r0") = (p);\
 		register unsigned long __l asm("r1") = __limit;		\
 		register int __e asm("r0");				\
 		switch (sizeof(*(__p))) {				\