Updated Makefile-ptest.patch
(From OE-Core rev: 56d3ead9da83e1116c5c6e78441275e079e466b2)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>