build: Makefile not support multiple thread build [2/2]

PD#SWPL-177960

Problem:
1. create wayland-protocol file
2. build
step 2 depend step 1

Solution:
add dependency for step 2

Verify:
local

Signed-off-by: guoping.li <guoping.li@amlogic.com>
Change-Id: I2aaf972ee5ef9ae3b611caeba3bbbafb7eb5cf16
2 files changed