Add Panasonic G6 & GF6. Blacklevel is estimated.
Add Panasonic G6 & GF6. Blacklevel is estimated.

git-svn-id: 04e88ac4940b0408b73cd6f458a224a262abaaff@545 ec705bc8-faf6-4f9b-9aff-b4916e9bedc3

jbuchbinder/rawspeed,jbuchbinder/rawspeed