serial: OMAP2+: UART: Make the SERIAL_OMAP depend on ARCH_OMAP2PLUS

Making  SERIAL_OMAP depend on ARCH_OMAP2PLUS instead of
oring with ARCH2/3/4.

Acked-by: Felipe Balbi <balbi@ti.com>
Suggested-by: Sricharan R <r.sricharan@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 956f2f0..3d86bda 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1324,7 +1324,7 @@
 
 config SERIAL_OMAP
 	tristate "OMAP serial port support"
-	depends on ARCH_OMAP2 || ARCH_OMAP3 || ARCH_OMAP4
+	depends on ARCH_OMAP2PLUS
 	select SERIAL_CORE
 	help
 	  If you have a machine based on an Texas Instruments OMAP CPU you