qca-wifi: Change event dump log size
Changing event dump size to 25 to make it same for all
events as qdf has limitation on event size.
If size is more than 25 then event of type command doesn't
gets printed.
Change-Id: Iaf2d4c52242b99194f7405d7d69a4566db71ff01
CRs-Fixed: 2510317