ARM: OMAP: Add missing '=' in omap_ts.c as proposed by
Andrzej Zaborowski.

Fix error

CC      drivers/input/touchscreen/omap/omap_ts.o
drivers/input/touchscreen/omap/omap_ts.c:230: error: syntax
error
before '{' token
drivers/input/touchscreen/omap/omap_ts.c:233: error: syntax
error
before '}' token

Signed-off-by: Dirk Behme <dirk.behme_at_gmail.com>