tests/Makefile: Derive check-qtest-ppc64-y from check-qtest-ppc-y

ppc64 is a superset of ppc, so the ppc64 tests should include all
the ppc tests.

Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/Makefile.include

@@ -320,15 +320,12 @@ check-qtest-ppc-y += tests/prom-env-test$(EXESUF)
 check-qtest-ppc-y += tests/drive_del-test$(EXESUF)
 check-qtest-ppc-y += tests/boot-serial-test$(EXESUF)
 
-check-qtest-ppc64-y = tests/spapr-phb-test$(EXESUF)
-gcov-files-ppc64-y = ppc64-softmmu/hw/ppc/spapr_pci.c
-check-qtest-ppc64-y += tests/endianness-test$(EXESUF)
-check-qtest-ppc64-y += tests/boot-order-test$(EXESUF)
-check-qtest-ppc64-y += tests/prom-env-test$(EXESUF)
+check-qtest-ppc64-y = $(check-qtest-ppc-y)
+gcov-files-ppc64-y = $(subst ppc-softmmu/,ppc64-softmmu/,$(gcov-files-ppc-y))
+check-qtest-ppc64-y += tests/spapr-phb-test$(EXESUF)
+gcov-files-ppc64-y += ppc64-softmmu/hw/ppc/spapr_pci.c
 check-qtest-ppc64-y += tests/pnv-xscom-test$(EXESUF)
-check-qtest-ppc64-y += tests/drive_del-test$(EXESUF)
 check-qtest-ppc64-y += tests/migration-test$(EXESUF)
-check-qtest-ppc64-y += tests/boot-serial-test$(EXESUF)
 check-qtest-ppc64-y += tests/rtas-test$(EXESUF)
 check-qtest-ppc64-$(CONFIG_SLIRP) += tests/pxe-test$(EXESUF)
 check-qtest-ppc64-y += tests/usb-hcd-ohci-test$(EXESUF)