configure: Distinguish ppc64 and ppc64le hosts
We cannot use the ppc64le host compiler to build ppc64(be) guest code. Clean up confusion between cross_cc_powerpc and cross_cc_ppc; make use of the cflags variable as well. Signed-off-by: NRichard Henderson <richard.henderson@linaro.org> Message-Id: <20190501223819.8584-2-richard.henderson@linaro.org> [dwg: Dropped hunk relating to ppc64abi32, it doesn't test properly] Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
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