[Arm-dev] Kernel bump to 4.11 for aarch64

I've just pushed the 4.11 kernel rebase into git ( https://git.centos.org/summary/?r=sig-altarch/kernel )

The previous patches included in the 4.5 kernel have been dropped as the majority either are now included or no longer apply cleanly. Please take a look at configs listed and submit patches for things you'd like to see enabled. This 4.11 base will be coming out shortly as part of the 7.4.1708 build.