asterisk-1.8.x: fix the ltq-vmmc dependecy

this broke full builds for !lantiq targets

Signed-off-by: John Crispin <blogic@openwrt.org>
Merge pull request #1 from blogic/master

asterisk-1.8.x: fix the ltq-vmmc dependecy
Add README.md file.

Signed-off-by: Jiri Slachta <slachta@cesnet.cz>