rk3288.dtsi add spi support

Change-Id: I9f13656e54b0a88c9f053a43d70797599bd2711a
support pmic rk808

Change-Id: I16988f96cc979cdf327df55a32645d97ffb7101a
update build_gpt_kernel.sh

Change-Id: I0d42c830d5fa6ed0eb094c0bba70d601586e216f