Enable swipe for recovery
Enable Bluetooth LE
ril: track multiple call states

Track multiple active calls so that we don't reset the
CPATH when there is active call on hold. This fixes issue
with lost audio when switching between calls.

Original: https://github.com/dhiru1602/android_device_lge_u2-common/commit/f60bdaca7a2c27a83fff4fc11a5df8f350b40ab0