qcacld-3.0: Increase FW version sub ID to 7-bits
Currently FW version sub ID is defined as 4-bits. But with new
requirement, the FW version sub ID value can vary up to 99.
To accommodate all possible values, increase number of bits to 7
for FW version sub ID.
Change-Id: I033697ba65d52b976658d795092fbff3b40faf9c
CRs-Fixed: 3067649