ppc: Split MPC83xx SERDES code from MPC85xx/MPC86xx/QorIQ

The MPC83xx SERDES control is different from the other FSL PPC chips.
For now lets split it out so we can standardize on interfaces for
determining of a device on SERDES is configured.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/arch/powerpc/cpu/mpc83xx/serdes.c b/arch/powerpc/cpu/mpc83xx/serdes.c
index 64033fe..fecfc80 100644
--- a/arch/powerpc/cpu/mpc83xx/serdes.c
+++ b/arch/powerpc/cpu/mpc83xx/serdes.c
@@ -15,7 +15,7 @@
 #include <config.h>
 #include <common.h>
 #include <asm/io.h>
-#include <asm/fsl_serdes.h>
+#include <asm/fsl_mpc83xx_serdes.h>
 
 /* SerDes registers */
 #define FSL_SRDSCR0_OFFS		0x0