usb: host: uhci-platform: Remove redundant use of of_match_ptr

'platform_uhci_ids' is always compiled in. Hence use of
of_match_ptr is unnecessary.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Tony Prisk <linux@prisktech.co.nz>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>