Also support parallel build for host-packages

SVN-Revision: 22698

include/host-build.mk

@@ -7,6 +7,8 @@
 
 HOST_BUILD_DIR ?= $(BUILD_DIR_HOST)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
 HOST_INSTALL_DIR ?= $(HOST_BUILD_DIR)/host-install
+HOST_BUILD_PARALLEL ?=
+HOST_JOBS ?= $(if $(HOST_BUILD_PARALLEL),$(if $(CONFIG_PKG_BUILD_PARALLEL),-j$(CONFIG_PKG_BUILD_JOBS)))
 
 include $(INCLUDE_DIR)/host.mk
 include $(INCLUDE_DIR)/unpack.mk
@@ -72,7 +74,7 @@ define Host/Configure
 endef
 
 define Host/Compile/Default
-	$(MAKE) -C $(HOST_BUILD_DIR) $(1)
+	$(MAKE) $(HOST_JOBS) -C $(HOST_BUILD_DIR) $(1)
 endef
 
 define Host/Compile