Convert CONFIG_MISC_INIT_R to Kconfig

This converts the following to Kconfig:
   CONFIG_MISC_INIT_R

Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Update the defaults logic slightly]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/common/Kconfig b/common/Kconfig
index 4d7215a..b3d9b37 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -539,6 +539,13 @@
 	help
 	  This option is used to set the default fdt file to boot OS.
 
+config MISC_INIT_R
+	bool "Execute Misc Init"
+	default y if ARCH_KEYSTONE || ARCH_SUNXI || MPC85xx
+	default y if ARCH_OMAP2PLUS && !AM33XX
+	help
+	  Enabling this option calls 'misc_init_r' function
+
 config VERSION_VARIABLE
 	bool "add U-Boot environment variable vers"
 	default n