build: support cmake verbose for host builds

Signed-off-by: Felix Fietkau <nbd@nbd.name>

include/cmake.mk

@@ -4,6 +4,7 @@ PKG_INSTALL:=1
 
 ifneq ($(findstring c,$(OPENWRT_VERBOSE)),)
   MAKE_FLAGS+=VERBOSE=1
+  HOST_MAKE_FLAGS+=VERBOSE=1
 endif
 
 CMAKE_BINARY_DIR = $(PKG_BUILD_DIR)$(if $(CMAKE_BINARY_SUBDIR),/$(CMAKE_BINARY_SUBDIR))