package/pkg-cmake.mk: disable colouring the output

Because cmake was the only build-system supporting this feature, it has been
disabled for the target packages.
For consistency, this patch does the same for host package too.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/pkg-cmake.mk

@@ -95,6 +95,7 @@ define $(2)_CONFIGURE_CMDS
 		-DCMAKE_C_FLAGS="$$(HOST_CFLAGS)" \
 		-DCMAKE_CXX_FLAGS="$$(HOST_CXXFLAGS)" \
 		-DCMAKE_EXE_LINKER_FLAGS="$$(HOST_LDFLAGS)" \
+		-DCMAKE_COLOR_MAKEFILE=OFF \
 		-DBUILD_DOC=OFF \
 		-DBUILD_DOCS=OFF \
 		-DBUILD_EXAMPLE=OFF \