powerpc/mm/radix: Fix CONFIG_PPC_MMU_STD_64 typo

It's CONFIG_PPC_STD_MMU_64 not ...
     CONFIG_PPC_MMU_STD_64.

Fixes: 11ffc1cfa4c2 ("powerpc/mm/radix: Use STD_MMU_64 to properly isolate hash related code")
Signed-off-by: NValentin Rothberg <valentinrothberg@gmail.com>
Reviewed-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/mce_power.c

@@ -80,7 +80,7 @@ void __flush_tlb_power9(unsigned int action)
 
 
 /* flush SLBs and reload */
-#ifdef CONFIG_PPC_MMU_STD_64
+#ifdef CONFIG_PPC_STD_MMU_64
 static void flush_and_reload_slb(void)
 {
 	struct slb_shadow *slb;
@@ -125,7 +125,7 @@ static long mce_handle_derror(uint64_t dsisr, uint64_t slb_error_bits)
 	 * reset the error bits whenever we handle them so that at the end
 	 * we can check whether we handled all of them or not.
 	 * */
-#ifdef CONFIG_PPC_MMU_STD_64
+#ifdef CONFIG_PPC_STD_MMU_64
 	if (dsisr & slb_error_bits) {
 		flush_and_reload_slb();
 		/* reset error bits */
@@ -157,7 +157,7 @@ static long mce_handle_common_ierror(uint64_t srr1)
 	switch (P7_SRR1_MC_IFETCH(srr1)) {
 	case 0:
 		break;
-#ifdef CONFIG_PPC_MMU_STD_64
+#ifdef CONFIG_PPC_STD_MMU_64
 	case P7_SRR1_MC_IFETCH_SLB_PARITY:
 	case P7_SRR1_MC_IFETCH_SLB_MULTIHIT:
 		/* flush and reload SLBs for SLB errors. */
@@ -184,7 +184,7 @@ static long mce_handle_ierror_p7(uint64_t srr1)
 
 	handled = mce_handle_common_ierror(srr1);
 
-#ifdef CONFIG_PPC_MMU_STD_64
+#ifdef CONFIG_PPC_STD_MMU_64
 	if (P7_SRR1_MC_IFETCH(srr1) == P7_SRR1_MC_IFETCH_SLB_BOTH) {
 		flush_and_reload_slb();
 		handled = 1;
@@ -332,7 +332,7 @@ static long mce_handle_ierror_p8(uint64_t srr1)
 
 	handled = mce_handle_common_ierror(srr1);
 
-#ifdef CONFIG_PPC_MMU_STD_64
+#ifdef CONFIG_PPC_STD_MMU_64
 	if (P7_SRR1_MC_IFETCH(srr1) == P8_SRR1_MC_IFETCH_ERAT_MULTIHIT) {
 		flush_and_reload_slb();
 		handled = 1;