powerpc/ebpf64: Use PPC_RAW_MFLR()

Use PPC_RAW_MFLR() instead of open coding with PPC_INST_MFLR.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c1887623e91e8b4da36e669e4c74de86320a5092.1621506159.git.christophe.leroy@csgroup.eu

arch/powerpc/include/asm/ppc-opcode.h

@@ -286,7 +286,6 @@
 #define PPC_INST_TSR			0x7c0005dd
 #define PPC_INST_LD			0xe8000000
 #define PPC_INST_STD			0xf8000000
-#define PPC_INST_MFLR			0x7c0802a6
 #define PPC_INST_ADDIS			0x3c000000
 #define PPC_INST_ADD			0x7c000214
 #define PPC_INST_DIVD			0x7c0003d2
@@ -480,7 +479,7 @@
 #define PPC_RAW_BLR()			(0x4e800020)
 #define PPC_RAW_BLRL()			(0x4e800021)
 #define PPC_RAW_MTLR(r)			(0x7c0803a6 | ___PPC_RT(r))
-#define PPC_RAW_MFLR(t)			(PPC_INST_MFLR | ___PPC_RT(t))
+#define PPC_RAW_MFLR(t)			(0x7c0802a6 | ___PPC_RT(t))
 #define PPC_RAW_BCTR()			(0x4e800420)
 #define PPC_RAW_BCTRL()			(0x4e800421)
 #define PPC_RAW_MTCTR(r)		(0x7c0903a6 | ___PPC_RT(r))

arch/powerpc/net/bpf_jit_comp64.c

@@ -94,7 +94,7 @@ void bpf_jit_build_prologue(u32 *image, struct codegen_context *ctx)
 		 * save/restore LR unless we call other functions
 		 */
 		if (ctx->seen & SEEN_FUNC) {
-			EMIT(PPC_INST_MFLR | __PPC_RT(R0));
+			EMIT(PPC_RAW_MFLR(_R0));
 			PPC_BPF_STL(0, 1, PPC_LR_STKOFF);
 		}