mozjs: fix multilib conflict
fix error:
.do_rootfs.2023872:4562: file /usr/bin/js60-config conflicts between attempted installs of mozjs-dev-60.9.0-r0.core2_64 and lib32-mozjs-dev-60.9.0-r0.core2_32
log.do_rootfs.2023872:4563: file /usr/include/mozjs-60/js-config.h conflicts between attempted installs of mozjs-dev-60.9.0-r0.core2_64 and lib32-mozjs-dev-60.9.0-r0.core2_32
Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>