selftests/powerpc: Handle Makefile for unrecognized option
On older distributions like Sles12SP5 gcc does not recognize -no-pie option making the powerpc selftests build to fail Fixes the following: gcc: error: unrecognized command line option ‘-no-pie’ Signed-off-by:Harish <harish@linux.ibm.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191113094219.14946-1-harish@linux.ibm.com
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