msm:8960: msm8x60: Fix clocks for usb, uart and mmc.

Change-Id: I54519ae7fb557eacdd4d744b5fd3b8d5c341e6d3
diff --git a/platform/init.c b/platform/init.c
index 113cd41..6ded650 100644
--- a/platform/init.c
+++ b/platform/init.c
@@ -52,3 +52,8 @@
 __WEAK void platform_config_interleaved_mode_gpios(void)
 {
 }
+
+__WEAK void uart_clock_init(void)
+{
+}
+