selftests/kcmp: Always try to build the test
selftests/kcmp: Always try to build the test

Don't prevent the test building on non-x86. Just try and build it and
let the chips fall where they may.

Add support for CROSS_COMPILE while we're at it. Also we don't need a
custom rule for building kcmp_test.

Signed-off-by: Michael Ellerman <864f124608374e06e4da1fa5d2e47ed839b95411@ellerman.id.au>
Reviewed-by: Christopher Covington <a4bb60c1cee4bc57e495283536ad4f6d94bfb161@codeaurora.org>
Signed-off-by: Shuah Khan <c62751f8c6ce7eb0639cab80a821801931863a4b@osg.samsung.com>

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