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/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index b72b6af..ee5f199 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -195,3 +195,9 @@
 	help
 	  This is to specific the cfg file for generating container
 	  image which will be loaded by SPL.
+
+config IOMUX_LPSR
+	bool
+
+config IOMUX_SHARE_CONF_REG
+	bool