cmake: expose the host variant in menuconfig

With the addition of the sdk support it may be interesting to build
host-cmake even though no packages need it, so expose it in menuconfig.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/Config.in.host

@@ -4,6 +4,7 @@ menu "Host utilities"
 	source "package/android-tools/Config.in.host"
 	source "package/cbootimage/Config.in.host"
 	source "package/checkpolicy/Config.in.host"
+	source "package/cmake/Config.in.host"
 	source "package/cramfs/Config.in.host"
 	source "package/dfu-util/Config.in.host"
 	source "package/dos2unix/Config.in.host"

package/cmake/Config.in.host

@@ -0,0 +1,11 @@
+config BR2_PACKAGE_HOST_CMAKE
+	bool "host cmake"
+	help
+	  CMake is an open-source, cross-platform family of tools
+	  designed to build, test and package software. CMake is used
+	  to control the software compilation process using simple
+	  platform and compiler independent configuration files, and
+	  generate native makefiles and workspaces that can be used in
+	  the compiler environment of your choice.
+
+	  http://www.cmake.org/