external/qemu: Support for Signal Strength in emulator

Change-Id: Ia62ef338b64739d50eeb55d33d15227a0047d8d0
Merge pull request #30 from EdgarChen/bug_869327

Bug 869327 - B2G Emulator: Upgrade hardware/ril, external/qemu to include RILv7/CDMA. r=vicamo
Cherry-picked from commit 8c4699985ec66961231542d8133868a3864bf39e
Bug 870422: share IRQ for goldfish_tty devices
Merge pull request #31 from vicamo/bugzilla/870422/shared-irq

Bug 870422: share IRQ for goldfish_tty devices. r=tzimmermann,dhylands
Bug 870422 (follow-up): fix cpu abort in `goldfish_device_set_irq`.

The 2nd param of `goldfish_device_set_irq()` is the nth IRQ owned by
the device, not the global IRQ number.
Merge pull request #32 from vicamo/bugzilla/870422/follow-up

Bug 870422 (follow-up): fix cpu abort in `goldfish_device_set_irq`. r=me
Bug 852583 - add an additional debug target: bluetooth
Bug 852583 - add goldfish_bt platform device
Bug 852583 - install a bluetooth device by default if not already specified.
Bug 852583 - add goldfish_rfkill platform device
Merge pull request #26 from vicamo/bluetooth

 Bug 852583 - enable bluetooth emulation. r=tzimmermann,dhylands
Bug 877530 - Set voice/data to unregistered when radio is off
Bug 859215 - Add support for SMSC command in emulator. r=vicamo
Merge pull request #34 from chuck-lee/bug-859215

Bug 859215 - Add support for SMSC command in emulator. r=vicamo
Bug 877560: B2G RIL - support EF_CBMID
Merge pull request #36 from vicamo/bugzilla/877560/cbmid

Bug 877560: B2G RIL - support EF_CBMID. r=yoshi
Bug 876369 - Part 1: Each modem should have it's own config settings
Bug 876369 - Part 2: Update config file when setting a new value to nvram
Bug 876369 - Part 3: Support switching radio technology
Bug 876369 - Part 4: Add console command for switching radio technology