ARM: OMAP: Set keypad sense delays for the Palms

Wait a fixed amount of time between writing to the columns
register and reading rows state to allow the keypad to respond
on Palm Tungsten E and Zire 71.  The value for Zire 71 keypad
was tested by Marek Vasut.
Signed-off-by: Andrzej Zaborowski <balrog@zabor.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/board-palmz71.c

@@ -76,6 +76,7 @@ static struct omap_kp_platform_data palmz71_kp_data = {
 	.cols	= 8,
 	.keymap	= palmz71_keymap,
 	.rep	= 1,
+	.delay	= 80,
 };
 
 static struct resource palmz71_kp_resources[] = {