linux-yocto: Rearranged fragments for zynq-standard into groupings.

To assist in viewing where what fragments come from, they have been
arranged into Zynq, Xilinx, and Yocto kernel-cache groups.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
recipes-kernel:linux-yocto: Add efi-ext.scc to zynq-standard.

Enable extended firmware unified interface support through an existing
yocto-kernel-cache fragment.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
recipes-kernel:linux-yocto: Rearranged fragments for zynq-tiny into groups.

To assist in viewing where what fragments come from, they have been
arranged into Zynq, Xilinx, and Yocto kernel-cache groups.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
recipes-kernel:linux-yocto-tiny: Remove a number of 'advanced' config
fragments.

To keep with the tiny-ness of this yocto tiny kernel target, remove
commonclk, watchdogtimer, ipsec, ipv6, mac80211, uio and tracing.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
recipes-kernel:linux-yocto: Remove kernel features from zynq-standard
kernel, as they can be added by users through KERNEL_FEATURES.

Removed uio.cfg and mac80211.cfg

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>