Install libpcre test suite and run it as ptest.
(From OE-Core rev: fadaa1c7f4d927e3003bc4750f3b677ed627febb)
Signed-off-by: Chong Lu <Chong.Lu@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>