luajit: Fix build with SSTATE enabled

luajit does not honor standard CC variables
so when its built from shared state it does
not compile because --sysroot is wrong.

This patch fixes the problem by passing
the TOOLCHAIN_OPTONS to appropriate flags
so that it gets the correct sysroot value

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>