cmake: Pass VERBOSE=1 to the generated makefile to reveal flags and commands...

cmake: Pass VERBOSE=1 to the generated makefile to reveal flags and commands in a verbose openwrt build.

SVN-Revision: 25376

include/cmake.mk

 PKG_INSTALL:=1
 
+MAKE_FLAGS+=VERBOSE=1
+
 define Build/Configure/Default
 	(cd $(PKG_BUILD_DIR); \
 		CFLAGS="$(TARGET_CFLAGS) $(EXTRA_CFLAGS)" \