arm: mach-omap1: mux.h: delete duplicate word

Drop the repeated word "is".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Tony Lindgren <tony@atomide.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/include/mach/mux.h

@@ -88,7 +88,7 @@
  * OMAP730/850 has a slightly different config for the pin mux.
  * - config regs are the OMAP7XX_IO_CONF_x regs (see omap7xx.h) regs and
  *   not the FUNC_MUX_CTRL_x regs from hardware.h
- * - for pull-up/down, only has one enable bit which is is in the same register
+ * - for pull-up/down, only has one enable bit which is in the same register
  *   as mux config
  */
 #define MUX_CFG_7XX(desc, mux_reg, mode_offset, mode,	\