Convert CONFIG_IOMUX_SHARE_CONF_REG et al to Kconfig

This converts the following to Kconfig:
   CONFIG_IOMUX_LPSR
   CONFIG_IOMUX_SHARE_CONF_REG

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3f68d09..eb5e3b6 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1245,6 +1245,7 @@
 	bool "Freescale Vybrid"
 	select CPU_V7A
 	select GPIO_EXTRA_HEADER
+	select IOMUX_SHARE_CONF_REG
 	select MACH_IMX
 	select SYS_FSL_ERRATUM_ESDHC111
 	imply CMD_MTDPARTS