usb: xhci: handle uPD720201 and uPD720202 w/o ROM

This patch adds a firmware check for the uPD720201K8-711-BAC-A
and uPD720202K8-711-BAA-A variant. Both of these chips are listed
in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
devices which need a firmware in order to work as they do not have
support to load the firmware from an external ROM.

Currently, the xhci-pci driver is unable to initialize the hcd in
this case. Instead it will wait for 30 seconds and cause a timeout
in xhci_handshake() and fails.

[    5.116990] xhci_hcd 0000:45:00.0: new USB bus registered ...
[   32.335215] xhci_hcd 0000:45:00.0: can't setup: -110
[   32.340179] xhci_hcd 0000:45:00.0: USB bus 2 deregistered
[   32.345587] xhci_hcd 0000:45:00.0: init 0000:45:00.0 fail, -110
[   32.351496] xhci_hcd: probe of 0000:45:00.0 failed with error -110

Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>