multipath-tools: fix ARM build failure

Updating to 0.6.4 introduced a build failure on ARM when thumb was
enabled because of the embedded valgrind.h macro calls. The easiest
solution and thus the one used here is to disable thumb for this
particular recipe for affected machines.

The more elaborate solution would be to patch the macro calls out of
the code when compiling for ARM with thumb.

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-oe/recipes-support/multipath-tools/multipath-tools_git.bb

@@ -27,6 +27,14 @@ PV = "0.6.4+git${@'${SRCPV}'.split('+')[-1]}"
 
 TARGET_CC_ARCH += "${LDFLAGS}"
 
+# multipath-tools includes a copy of the valgrind.h header
+# file and uses the macros to suppress some false positives. However,
+# that only works on ARM when thumb is disabled. Otherwise one gets:
+#   Error: shifts in CMP/MOV instructions are only supported in unified syntax -- `mov r12,r12,ror#3'
+#   ../Makefile.inc:66: recipe for target 'debug.o' failed
+ARM_INSTRUCTION_SET_armv4 = "arm"
+ARM_INSTRUCTION_SET_armv5 = "arm"
+
 # The exact version of SYSTEMD does not matter but should be greater than 209.
 #
 EXTRA_OEMAKE = 'MULTIPATH_VERSION=${PV} DESTDIR=${D} syslibdir=${base_libdir} \
@@ -59,5 +67,3 @@ FILES_kpartx = "${base_sbindir}/kpartx \
                "
 
 RDEPENDS_${PN} += "kpartx"
-
-PNBLACKLIST[multipath-tools] ?= "Fails to build with RSS http://errors.yoctoproject.org/Errors/Details/130529/"