Kconfig: Migrate CONFIG_BOOTM_* options

Migrate all of the existing OS support options that are under
CONFIG_BOOTM_* to Kconfig.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index c61c851..8fcb1b8 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -268,6 +268,54 @@
 	help
 	  Boot an EFI image from memory.
 
+config BOOTM_LINUX
+	bool "Support booting Linux OS images"
+	depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
+	default y
+	help
+	  Support booting the Linux kernel directly via a command such as bootm
+	  or booti or bootz.
+
+config BOOTM_NETBSD
+	bool "Support booting NetBSD (non-EFI) loader images"
+	depends on CMD_BOOTM
+	default y
+	help
+	  Support booting NetBSD via the bootm command.
+
+config BOOTM_OPENRTOS
+	bool "Support booting OPENRTOS / FreeRTOS images"
+	depends on CMD_BOOTM
+	help
+	  Support booting OPENRTOS / FreeRTOS via the bootm command.
+
+config BOOTM_OSE
+	bool "Support booting Enea OSE images"
+	depends on CMD_BOOTM
+	help
+	  Support booting Enea OSE images via the bootm command.
+
+config BOOTM_PLAN9
+	bool "Support booting Plan9 OS images"
+	depends on CMD_BOOTM
+	default y
+	help
+	  Support booting Plan9 images via the bootm command.
+
+config BOOTM_RTEMS
+	bool "Support booting RTEMS OS images"
+	depends on CMD_BOOTM
+	default y
+	help
+	  Support booting RTEMS images via the bootm command.
+
+config BOOTM_VXWORKS
+	bool "Support booting VxWorks OS images"
+	depends on CMD_BOOTM
+	default y
+	help
+	  Support booting VxWorks images via the bootm command.
+
 config CMD_BOOTEFI_HELLO_COMPILE
 	bool "Compile a standard EFI hello world binary for testing"
 	depends on CMD_BOOTEFI && !CPU_V7M && !SANDBOX