msm: socinfo: Add a cpu_is macro for msm8974

Add support for identifying the msm8974 SoC and update the
MIDR fallback table accordingly.

Change-Id: Idc34cac2963776b07ad59c0727bcb49ae42be1ea
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
diff --git a/arch/arm/mach-msm/socinfo.c b/arch/arm/mach-msm/socinfo.c
index 817c2dc..f3b5720 100644
--- a/arch/arm/mach-msm/socinfo.c
+++ b/arch/arm/mach-msm/socinfo.c
@@ -793,6 +793,10 @@
 	case 0x510F06F0:
 		return MSM_CPU_8064;
 
+	case 0x511F06F1:
+	case 0x512F06F0:
+		return MSM_CPU_8974;
+
 	default:
 		return MSM_CPU_UNKNOWN;
 	};