brcmfmac: reset SDIO bus on a firmware crash

commit 4684997d ("brcmfmac: reset PCIe bus on a firmware crash")
adds a reset function to recover firmware trap for PCIe bus. This commit
adds an implementation for SDIO bus.

Upon SDIO firmware trap, do below:
 - Remove the device
 - Reset hardware
 - Probe the device again

Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200622144851.165248-1-chi-hsien.lin@cypress.com