mx6: soc: Staticize set_vddsoc()

set_vddsoc() is not used anywhere else, so make it static.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

arch/arm/cpu/armv7/mx6/soc.c

@@ -101,7 +101,7 @@ void init_aips(void)
  * Possible values are from 0.725V to 1.450V in steps of
  * 0.025V (25mV).
  */
-void set_vddsoc(u32 mv)
+static void set_vddsoc(u32 mv)
 {
 	struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
 	u32 val, reg = readl(&anatop->reg_core);

arch/arm/include/asm/arch-mx6/sys_proto.h

@@ -29,8 +29,6 @@ u32 get_cpu_rev(void);
 const char *get_imx_type(u32 imxtype);
 unsigned imx_ddr_size(void);
 
-void set_vddsoc(u32 mv);
-
 /*
  * Initializes on-chip ethernet controllers.
  * to override, implement board_eth_init()