mx6: soc: Set the VDDSOC at 1.175 V

mx6 datasheet specifies that the minimum VDDSOC at 792 MHz is 1.15 V.
Add a 25 mV margin and set it to 1.175V.

This also matches the VDDSOC voltages for 792MHz operation that the kernel configures:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/arch/arm/mach-mx6/cpu_op-mx6.c?h=imx_3.0.35_4.1.0



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

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

@@ -151,7 +151,7 @@ int arch_cpu_init(void)
 {
 	init_aips();
 
-	set_vddsoc(1200);	/* Set VDDSOC to 1.2V */
+	set_vddsoc(1175);	/* Set VDDSOC to 1.175V */
 
 	imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */