Add kernel configuration necessary to build an image with preempt-rt support
for fvp-baser-aemv8r64, together with a build configuration file to build it via
kas.
Update BSP documentation for RT linux support on the machine.
Issue-Id: SCM-2343
Signed-off-by: Richard Neill <richard.neill@arm.com>
Change-Id: I11e3ba3ad7da00db1810c70fa4f98bfffd4b8254
Signed-off-by: Ross Burton <ross.burton@arm.com>