ARM: ux500: Provide SMSC911x fixed-regulator when not booting DT

The SMSC911x Ethernet chip requires a fixed-regulator in order to
function correctly. We have previously provided a means to obtain
this during a Device Tree boot, however nothing has been put into
place when booting with a non-DT kernel. This patch aims to change
that.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
[Added a Kconfig select so the build does not break]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index c013bbf..220eb8a 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig
@@ -28,6 +28,7 @@
 	select I2C
 	select I2C_NOMADIK
 	select SOC_BUS
+	select REGULATOR_FIXED_VOLTAGE
 	help
 	  Include support for the MOP500 development platform.