Allow getSystemSelectionChannels to return specifiers

Bug: 179929817
Test: VTS
Change-Id: I574e897c0fdb57cad1a3655c34d43f0d080de9ae
diff --git a/radio/1.6/IRadio.hal b/radio/1.6/IRadio.hal
index b756ce1..7c00e04 100644
--- a/radio/1.6/IRadio.hal
+++ b/radio/1.6/IRadio.hal
@@ -462,7 +462,7 @@
      * cell information isn't known then the appropriate unknown value will be returned.
      * This does not cause or change the rate of unsolicited cellInfoList().
      *
-     * This is identitcal to getCellInfoList in V1.0, but it requests updated version of CellInfo.
+     * This is identical to getCellInfoList in V1.0, but it requests updated version of CellInfo.
      *
      * @param serial Serial number of request.
      *