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/serial.c b/arch/arm/mach-omap2/serial.c
index 12363f3..812976e 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -29,7 +29,6 @@
 
 #include <plat/omap-serial.h>
 #include <plat-omap/dma-omap.h>
-#include <plat/serial.h>
 
 #include "common.h"
 #include "omap_hwmod.h"
@@ -42,6 +41,7 @@
 #include "prm-regbits-34xx.h"
 #include "control.h"
 #include "mux.h"
+#include "serial.h"
 
 /*
  * NOTE: By default the serial auto_suspend timeout is disabled as it causes