Revert "PCI: brcmstb: Wait for Raspberry Pi's firmware when present"

This reverts commit 44331189

.

Now that the VL805 init routine is run through a reset controller driver
the device dependencies are being taken care of by the device core. No
need to do it manually here.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200629161845.6021-10-nsaenzjulienne@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>