disable mips16 for a few packages that don't compile with it

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37773 3c298f89-4303-0410-b956-a3cf2f4a3e73
alsa-libs: disable mips16 (#13522)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37774 3c298f89-4303-0410-b956-a3cf2f4a3e73
elfutils: disable mips16 (#13572)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37775 3c298f89-4303-0410-b956-a3cf2f4a3e73
build: fix typo in mips16 changes

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@37776 3c298f89-4303-0410-b956-a3cf2f4a3e73