Clean up more warnings

Change-Id: I8fc1a0a55a421ee3dbdcb484fbea71192359471d
diff --git a/platform/msm8960/platform.c b/platform/msm8960/platform.c
index d20af34..b931bbf 100644
--- a/platform/msm8960/platform.c
+++ b/platform/msm8960/platform.c
@@ -38,12 +38,15 @@
 #include <arch/arm/mmu.h>
 
 extern void platform_init_timer(void);
+extern void platform_panel_backlight_on(void);
+extern void platform_uninit_timer(void);
 extern void mipi_panel_reset(void);
 extern void mipi_dsi_panel_power_on(void);
 extern void mdp_clock_init(void);
 extern void mmss_clock_init(void);
 extern struct fbcon_config *mipi_init(void);
 extern void mipi_dsi_shutdown(void);
+extern uint8_t target_uart_gsbi(void);
 
 static uint32_t ticks_per_sec = 0;