This changeset fixes SPEC-261 [1]
The recipe relies on ${B} = ${S} and
ft2demos needs to find the right libtool.
Therefore we remove the hardcoded LIBTOOL in the makefile.
LIBTOOL is already set and imported through config.mk
v2: replaced sed with patch
[1] https://jira.automotivelinux.org/browse/SPEC-261
Change-Id: I25f472a1774b0e7922828271117e96bf254e4b59
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>