selftests/powerpc: Fix typo in spectre_v2

Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210608054851.164659-1-ruscur@russell.cc

tools/testing/selftests/powerpc/security/spectre_v2.c

@@ -207,7 +207,7 @@ int spectre_v2_test(void)
 		break;
 	case COUNT_CACHE_DISABLED:
 		if (miss_percent < 95) {
-			printf("Branch misses < 20%% unexpected in this configuration!\n");
+			printf("Branch misses < 95%% unexpected in this configuration!\n");
 			printf("Possible mis-match between reported & actual mitigation\n");
 			return 1;
 		}