Changing logic that generates virtual SENSOR_TYPE_LINEAR_ACCELERATION.

New logic only requires accel/gyro to be available rather than
accel/gyro/mag which is not necessary.

Bug: 145707966
Fix: 145707966
Test: Flashed a Hawk device (AAE development platform) that does not
have Linear Acceleration Sensor currently.
After flashing :
Linear Acceleration Sensor | AOSP            | ver: 3 | type: android.sensor.linear_acceleration(10) | perm: n/a | flags: 0x00000000
        continuous | maxDelay=0us | maxRate=500.00Hz | no batching | non-wakeUp |

Change-Id: Idfe7c1ab357e363cb2c8daf6e4175adbbcf9d8c4
(cherry picked from commit 63daa668)