The binary gen-all-unicode needs to be compiled for the host
architecture, the CFLAGS passed to target system could cause
build issues for it.
(From OE-Core rev: b797cfbe605ab250a5eb714a7d5175861690ae6e)
Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>