net: cnss: add dual cnss platform driver support for dual WiFi

For dual WiFi both cnss sdio and pcie platform needs to
be enabled. Added changes below to support dual platform
driver for dual WiFi.

Refactor the common api and data structure to avoid namespace
collision compilation error. Refactor sdio and pcie bus specific
kernel api and removed conditional compilation config flag.

The platform driver at run time identifies the wlan bus type
from the PHY device pointer passed by the wlan driver through
vos api and cnss platform driver redirects the cnss api according
the bus type.

Remove conditional compilation flag from cnss common api and
update cnss makefile for dual platform driver compilation
with single config flag.

CRs-Fixed: 988871
Change-Id: I8205c2979c857c2f3845ba2dc397d2f9dd1afa3b
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>
Signed-off-by: Ryan Hsu <ryanhsu@codeaurora.org>