MIPS: traps: Use GPR number macros

Use GPR number macros in uasm code generation parts to
reduce code duplication.

No functional change.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/kernel/traps.c

@@ -58,6 +58,7 @@
 #include <asm/module.h>
 #include <asm/msa.h>
 #include <asm/ptrace.h>
+#include <asm/regdef.h>
 #include <asm/sections.h>
 #include <asm/siginfo.h>
 #include <asm/tlbdebug.h>
@@ -2041,13 +2042,12 @@ void __init *set_except_vector(int n, void *addr)
 		unsigned long jump_mask = ~((1 << 28) - 1);
 #endif
 		u32 *buf = (u32 *)(ebase + 0x200);
-		unsigned int k0 = 26;
 		if ((handler & jump_mask) == ((ebase + 0x200) & jump_mask)) {
 			uasm_i_j(&buf, handler & ~jump_mask);
 			uasm_i_nop(&buf);
 		} else {
-			UASM_i_LA(&buf, k0, handler);
-			uasm_i_jr(&buf, k0);
+			UASM_i_LA(&buf, GPR_K0, handler);
+			uasm_i_jr(&buf, GPR_K0);
 			uasm_i_nop(&buf);
 		}
 		local_flush_icache_range(ebase + 0x200, (unsigned long)buf);