qcacmn: Add the SOCID for WCN6750_V2 chip
SOC ID is missing for WCN6750_V2 and as a result correct
string for chip is not sent to CNE. This leads to the
issue in Wifi calls.
Add the SOC ID for WCN6750_V2.
CRs-Fixed: 3552566
Change-Id: I80d19742f6ffa1c5b03f1f2576c6e4c0c4a1c1db