mt7630: Clean up build for kernel 3.5 and add firmware

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
mt7630: Update shell files and remove several warnings

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
mt7630: Update for kernel 3.6

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
mt7630: Modify to build under kernel 3.7

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
mt7630: Make mods needed for kernel 3.8

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
mt7630: Modify to build with kernel 3.9

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
mt7630: Fix build with kernel 3.10

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
mt7630: Update README.md

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>