removed mpu6050_scale cli since it's now autodetected.
the value is now printed in the status command, after MPU6050 as MPU6050.n = new revision, MPU6050.o = old revision.

git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@278 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61