ARM: keystone: use #include to include skeleton.dtsi
ARM: keystone: use #include to include skeleton.dtsi

Replace /include/ (dtc) with #include (C pre-processor) to
include skeleton.dtsi

Signed-off-by: Santosh Shilimkar <5b4d8dc9ea337fff5fd1729321eda9873ade0b09@ti.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs