Revert : build cmRemiX v2.1

(cherry picked from commit 32cb3a856180374eef6d51eeefbb34d254df81f3) (reverted from commit e0f1b7823150acd97ecf5da8930e644d5b0361df)

(cherry picked from commit 4ac9abb4db2312da211ecc1234e79228280fe775)
fix cmremix version

(cherry picked from commit ac6e7463e0e183cf47d631e15a7b711b5a5bbd47)
Use prebuilt chromium by default

thanks to OmniRom for this implement

(cherry picked from commit 7988f397215e151958e057a5d835c1d98980c127)