[ARM] 3023/1: pxa-regs: Typo in ARM pxa register definitions.

Patch from Paul Schulz

The following trivial patch is to fix what looks like a typo in the PXA register
definitions. The correction comes directly from the definition in the
Intel Documentation.

 http://www.intel.com/design/pca/applicationsprocessors/manuals/278693.htm
 Intel(R) PXA 255 Processor - Developers Manual - Jan 2004 - Page 12-33

Neither 'UDCCS_IO_ROF' or 'UDCCS_IO_DME' are currently used elseware
in the main code (from grep of tree)... The current definitions have been
in the code since at lease 2.4.7.
Signed-off-by: NPaul Schulz <paul@mawsonlakes.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/arch-pxa/pxa-regs.h

@@ -653,7 +653,7 @@
 
 #define UDCCS_IO_RFS	(1 << 0)	/* Receive FIFO service */
 #define UDCCS_IO_RPC	(1 << 1)	/* Receive packet complete */
-#define UDCCS_IO_ROF	(1 << 3)	/* Receive overflow */
+#define UDCCS_IO_ROF	(1 << 2)	/* Receive overflow */
 #define UDCCS_IO_DME	(1 << 3)	/* DMA enable */
 #define UDCCS_IO_RNE	(1 << 6)	/* Receive FIFO not empty */
 #define UDCCS_IO_RSP	(1 << 7)	/* Receive short packet */