cnss2: Remove module_param* APIs

module_param* APIs don't scale well for multiple device instances
for one driver. Move module_param to debugfs.

CRs-Fixed: 2377009
Change-Id: Ibe556be202b28462908d12bba4dcedd12929dc42
Signed-off-by: Yuanyuan Liu <yuanliu@codeaurora.org>