cnss_prealloc: Differentiate prealloc table by WLAN chip

Different WLAN chip may be attached to same kernel, and different
prealloc table required accordingly.

Here use CNSS_QCA6390 to identify if QCA6390 attached.

Change-Id: I7879379fb58d197c0c109b34cfacf6c23164713a
CRs-Fixed: 2516686
Signed-off-by: Lin Bai <lbai@codeaurora.org>