msm8660: support SC-* model numbers in radio assertion

  * needed for quincydcm (SC-05D)
  * quincydcm radio blobs have "SGH-" strings within them which
    requires us to search for "SC-" first and then "SGH-" to avoid
    using the wrong model number in the radio version search.

Change-Id: Ibbc444f64fe328088f04950770d5da27c976cc13