cmake: update inteface functions to use xpcg

cmake/Msg-Interface.cmake

@@ -1,8 +1,8 @@
-find_program(IFC
-	NAMES ifc
+find_program(XPCG
+	NAMES xpcg
 	REQUIRED
 	HINTS ${BUILD_TOOLS_DIR})
-message(STATUS "Found interface compiler: ${IFC}")
+message(STATUS "Found interface generator: ${XPCG}")
 
 function(add_interface)
 	set(options)
@@ -20,9 +20,9 @@ function(add_interface)
 
 	add_custom_command(
 		OUTPUT ${header_path}
-		COMMAND	${IFC} ${arg_PATH}
+		COMMAND	${XPCG} ${arg_PATH}
 		WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${arg_PARENT_DIR}
-		COMMENT "Compiling interface: ${arg_NAME}")
+		COMMENT "Generating interface: ${arg_NAME}")
 
 	add_custom_target(ifgen-${arg_NAME} ALL
 		DEPENDS ${header_path})