kconfig: move CONFIG_OF_* to Kconfig

This commit moves:
  CONFIG_OF_CONTROL
  CONFIG_OF_SEPARATE
  CONFIG_OF_EMBED
  CONFIG_OF_HOSTFILE

Because these options are currently not supported for SPL,
the "Device Tree Control" menu does not appear in the SPL
configuration.

Note:
zynq-common.h should be adjusted so as not to change the
default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/Kconfig b/arch/Kconfig
index c9ccb7d..bf26764 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -7,6 +7,7 @@
 
 config ARM
 	bool "ARM architecture"
+	select SUPPORT_OF_CONTROL
 
 config AVR32
 	bool "AVR32 architecture"
@@ -19,6 +20,7 @@
 
 config MICROBLAZE
 	bool "MicroBlaze architecture"
+	select SUPPORT_OF_CONTROL
 
 config MIPS
 	bool "MIPS architecture"
@@ -37,6 +39,7 @@
 
 config SANDBOX
 	bool "Sandbox"
+	select SUPPORT_OF_CONTROL
 
 config SH
 	bool "SuperH architecture"
@@ -46,6 +49,7 @@
 
 config X86
 	bool "x86 architecture"
+	select SUPPORT_OF_CONTROL
 
 endchoice