X86_32: declare pt_regs_access as unsigned long

Fixed pt_regs_access to unsigned long as per X86_64
Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>

arch/x86/kernel/ptrace.c

@@ -69,7 +69,7 @@ static inline bool invalid_selector(u16 value)
 
 #define FLAG_MASK		FLAG_MASK_32
 
-static long *pt_regs_access(struct pt_regs *regs, unsigned long regno)
+static unsigned long *pt_regs_access(struct pt_regs *regs, unsigned long regno)
 {
 	BUILD_BUG_ON(offsetof(struct pt_regs, bx) != 0);
 	regno >>= 2;