linux-rockchip-3.0.inc: use consistent indentation with 4 spaces
linux-rockchip-3.0.inc: use consistent indentation with 4 spaces

cf. http://www.openembedded.org/wiki/Styleguide#Format_Guidelines

twoerner/meta-rockchip-twoerner,hizukiayaka/meta-rockchip,hizukiayaka/meta-rockchip,twoerner/meta-rockchip-twoerner,hizukiayaka/meta-rockchip