net: cnss: add cnss common api support for dual WiFi

Add common api support of subsystem restart and bus
bandwidth for dual wifi. This feature redirect the cnss
export api according to the bus type SDIO/PCI.

CRs-Fixed: 986275
Change-Id: Iaf13d6c6d68ef62b7e4f6581899ec8325c5e9696
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>