fix compiling warning and error when CONFIG_NX=y, EXAMPLES_PWFB=y and EXAMPLES_PWFB_DEFAULT_FONT=y
fix CI-Precheck for pwfb_motion.c
Signed-off-by: YanXiaowei <yanxiaowei@xiaomi.com>
Squashed commit of the following:
apps/examples/pwfb: Fixes compile and early debug issues.
apps/examples/pwfb: Code complete!
apps/examples/pwfb: Flesh out the motion logic.
apps/examples/pwfb: Add an example/test case that will, eventually be used verify the per-window framebuffer logic. This is not even code complete at this point.