platform: msm8952: Add GPLL4 clock overrides for 8956

Add functions to detect the platform as 8956, and
to update the status registers and bits to be checked
for GPLL4.

Change-Id: Ic2bbf727d30ab2f7c17461e0fc769d4fd7cbfac4
diff --git a/platform/msm8952/platform.c b/platform/msm8952/platform.c
index 996d603..0f1439a 100644
--- a/platform/msm8952/platform.c
+++ b/platform/msm8952/platform.c
@@ -172,3 +172,23 @@
 {
 	return 256;
 }
+
+int platform_is_msm8956()
+{
+	uint32_t platform = board_platform_id();
+	uint32_t ret = 0;
+
+	switch(platform)
+	{
+		case MSM8956:
+		case APQ8056:
+		case APQ8076:
+		case MSM8976:
+			ret = 1;
+			break;
+		default:
+			ret = 0;
+	};
+
+	return ret;
+}