dbus-test: fix ptest failed problem when multilib is enabled

Fix some failed info like:
| ./test/test-bus: relocation error: ./test/test-bus: symbol
| _dbus_threads_init_debug, version LIBDBUS_PRIVATE_1.10.10 not defined
| in file libdbus-1.so.3 with link time reference
| FAIL: test/test-bus

In run-ptest, LD_LIBRARY_PATH is set to /usr/lib, but when multilib
is enabled, /usr/lib64 will be used. fix by replace with correct path.

(From OE-Core rev: d1bdf962dc3f121066bd7efb451dd9072b881718)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/dbus/dbus-test_1.12.10.bb

@@ -75,6 +75,7 @@ do_install_ptest() {
 		sed -i \
 		 -e 's:${B}:${PTEST_PATH}:g' \
 		 {} +
+        sed -i -e 's;@PTEST_PATH@;${PTEST_PATH};g'  ${D}${PTEST_PATH}/run-ptest
 }
 
 RDEPENDS_${PN}-ptest += "bash"

meta/recipes-core/dbus/dbus/run-ptest

@@ -12,7 +12,7 @@ output() {
 
 export DBUS_TEST_HOMEDIR=./test
 export XDG_RUNTIME_DIR=./test
-export LD_LIBRARY_PATH=/usr/lib/dbus-test/ptest/test/.libs
+export LD_LIBRARY_PATH=@PTEST_PATH@/test/.libs
 
 files=`ls test/test-*`