uboot-tools: add option for mkenvimage

The tool mkenvimage generates a valid binary environment image from
a text file describing the key=value pairs of the environment.
This commit allows installation on target and host.

Signed-off-by: Arnaud Rébillout <rebillout@syscom.ch>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/uboot-tools/Config.in

@@ -13,6 +13,13 @@ config BR2_PACKAGE_UBOOT_TOOLS_MKIMAGE
 	  The mkimage tool from Das U-Boot bootloader, which allows
 	  generation of U-Boot images in various formats.
 
+config BR2_PACKAGE_UBOOT_TOOLS_MKENVIMAGE
+	bool "mkenvimage"
+	help
+	  The mkenvimage tool from Das U-Boot bootloader, which allows
+	  generation of a valid binary environment image from a text file
+	  describing the key=value pairs of the environment.
+
 config BR2_PACKAGE_UBOOT_TOOLS_FWPRINTENV
 	bool "fw_printenv"
 	default y

package/uboot-tools/uboot-tools.mk

@@ -24,6 +24,12 @@ define UBOOT_TOOLS_INSTALL_MKIMAGE
 endef
 endif
 
+ifeq ($(BR2_PACKAGE_UBOOT_TOOLS_MKENVIMAGE),y)
+define UBOOT_TOOLS_INSTALL_MKENVIMAGE
+	$(INSTALL) -m 0755 -D $(@D)/tools/mkenvimage $(TARGET_DIR)/usr/bin/mkenvimage
+endef
+endif
+
 ifeq ($(BR2_PACKAGE_UBOOT_TOOLS_FWPRINTENV),y)
 define UBOOT_TOOLS_INSTALL_FWPRINTENV
 	$(INSTALL) -m 0755 -D $(@D)/tools/env/fw_printenv $(TARGET_DIR)/usr/sbin/fw_printenv
@@ -33,6 +39,7 @@ endif
 
 define UBOOT_TOOLS_INSTALL_TARGET_CMDS
 	$(UBOOT_TOOLS_INSTALL_MKIMAGE)
+	$(UBOOT_TOOLS_INSTALL_MKENVIMAGE)
 	$(UBOOT_TOOLS_INSTALL_FWPRINTENV)
 endef
 
@@ -51,6 +58,7 @@ endef
 
 define HOST_UBOOT_TOOLS_INSTALL_CMDS
 	$(INSTALL) -m 0755 -D $(@D)/tools/mkimage $(HOST_DIR)/usr/bin/mkimage
+	$(INSTALL) -m 0755 -D $(@D)/tools/mkenvimage $(HOST_DIR)/usr/bin/mkenvimage
 endef
 
 $(eval $(generic-package))