ARM: OMAP: Split plat/serial.h for omap1 and omap2+

For omap1, we'll keep mach/serial.h around for 8250.c hardware
workarounds. For omap2+, we no longer need mach/serial.h and
can make it local to mach-omap2.

Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index d5d52a7..abe66ce 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -20,8 +20,6 @@
 #include <linux/platform_data/gpio-omap.h>
 
 #include <plat-omap/dma-omap.h>
-#include <plat/serial.h>
-
 #include "l3_3xxx.h"
 #include "l4_3xxx.h"
 #include <linux/platform_data/asoc-ti-mcbsp.h>
@@ -41,6 +39,7 @@
 #include "i2c.h"
 #include "mmc.h"
 #include "wd_timer.h"
+#include "serial.h"
 
 /*
  * OMAP3xxx hardware module integration data