usb: [MIPS] fix unresolved err() reference in host/ohci-pnx8550.c

usb: [MIPS] fix unresolved err() reference in host/ohci-pnx8550.c

Commit 996fc05a2d88f9fd4e821d2b7cc532f173d7b25d (usb-next)

    "USB: remove err() macro"

was preceeded by a tree-wide cleanup of users, however this
one squeaked through the cracks because it had whitespace
between the function name and the bracket for the args.

Map it onto dev_err, just like all the "pre-commits" made
in advance of 996fc05a2d88, such as the example seen in
the commit ed14a2a187bbb550160e8e7311fefad6de0e75b4:

    "USB: ohci-xls.c: remove err() usage"

Build tested with the MIPS pnx8550-jbs_defconfig settings.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>