m7spr: move Telephony overlay to device

These overlay settings are applicable to m7spr only, and several should
be applied to more spns than 310120. Move them out of common and into
the correct overlay structure here.

config_apn_expand was removed because it is already true by default.

Change-Id: I747bd67be0e270c08433575c695c882a1895606a
m7spr: update fingerprint from 5.03.651.3 RUU

Change-Id: Ibab1202710aa2e291f026fd7e5cc66d3783c0e21
m7spr: update ril system props

From 5.03.651.3 build.prop:
- Increase snapshot_timer to 22
- Remove ril props that do not exist in stock and don't seem to belong
  * While persist.radio.mode_pref_nv10 does exist when running strings
    on m7spr radio libs, it isn't specified in build.prop.
- Add QCOM prop "ro.ril.scan.selection.rat"
  * This does exist when running strings on m7spr radio libs

Change-Id: I7562310cea0040140b9e61c68a759fc6a042ec80
m7spr: Add FM radio support

Change-Id: If68c16f9fca62b6436803dd2cda967b6304f63a9
m7spr: Add libqcomfm_jni target

Change-Id: I138563257078c1a6bf8cea30a7237a1d9ed55521
m7spr: Define cache image params

Change-Id: I79fe6ec5924d4b3c3ed0443fc3271f58ac367cfd
Adapt for eos