msm7x27a: Remove code to enable PLL4.

On 7x27a we are not using PLL4 for 600MHZ ACPU frequency.
So removing this code to save power during bootup.

Change-Id: Ic30a3876f4455f5867e421ad4dc5b48c1bd59732
diff --git a/platform/msm7x27a/acpuclock.c b/platform/msm7x27a/acpuclock.c
index c36b5d6..c203813 100755
--- a/platform/msm7x27a/acpuclock.c
+++ b/platform/msm7x27a/acpuclock.c
@@ -201,7 +201,11 @@
 			clk_cntl_reg_val = clk_cntl_reg_val_7627A;
 			size = ARRAY_SIZE(clk_cntl_reg_val_7627A);
 			pll_request(2, 1);
+
+		/* TODO: Enable this PLL while switching to 800MHz */
+		#if 0
 			pll_request(4, 1);
+		#endif
 			break;
 
 		case MSM7225A: