prima: Remove a redundant HDD cache for PMKID.
This fix contains two changes -
1. Increase the size of PMKID cache in csr.
Also the cache size is changed to 32 to make it equal
to the size in supplicant.
2. Optimization changes to remove the HDD PMKID cache.
CSR maintains a cache already for PMKID, hence a HDD
cache is redundant. Also this fix ensures that the
cache always contains the last saved PMKIDs and does
not over-write them
Change-Id: Ibb6676f65e771c7ac6315622fa04c373656791bb
CRs-Fixed: 729385
9 files changed