Update libnewt to 0.52.13, and remove include-without-python.patch
because it has been merged.
Update SRC_URI and add SRC_URI checksum.
(From OE-Core rev: b83284d2be47019e1ca122ce4a2b1a077e7c3174)
Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>