PCI: iproc: Fix BCMA probe resource handling

In commit 7ef1c871da16 ("PCI: iproc: Use
pci_parse_request_of_pci_ranges()"), calling
devm_request_pci_bus_resources() was dropped from the common iProc
probe code, but is still needed for BCMA bus probing. Without it, there
will be lots of warnings like this:

pci 0000:00:00.0: BAR 8: no space for [mem size 0x00c00000]
pci 0000:00:00.0: BAR 8: failed to assign [mem size 0x00c00000]

Add back calling devm_request_pci_bus_resources() and adding the
resources to pci_host_bridge.windows for BCMA bus probe.

Link: https://lore.kernel.org/r/20210803215656.3803204-2-robh@kernel.org
Fixes: 7ef1c871da16 ("PCI: iproc: Use pci_parse_request_of_pci_ranges()")
Reported-by: Rafał Miłecki <zajec5@gmail.com>
Tested-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Srinath Mannam <srinath.mannam@broadcom.com>
Cc: Roman Bacik <roman.bacik@broadcom.com>
Cc: Bharat Gooty <bharat.gooty@broadcom.com>
Cc: Abhishek Shah <abhishek.shah@broadcom.com>
Cc: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Cc: Ray Jui <ray.jui@broadcom.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: BCM Kernel Feedback <bcm-kernel-feedback-list@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: "Krzysztof Wilczyński" <kw@linux.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>

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