[POWERPC] Put mpc52xx support file in platforms/52xx

platforms/embedded6xx is probably going away, and 52xx boards need
some extra support the 52xx interrupt controller and DMA engine
anyway.  It makes sense to group all the 52xx bits into a single path.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/Kconfig

@@ -410,6 +410,10 @@ config PPC_CHRP
 	select PPC_NATIVE
 	default y
 
+config PPC_MPC52xx
+	bool
+	default n
+
 config PPC_EFIKA
 	bool "bPlan Efika 5k2. MPC5200B based computer"
 	depends on PPC_MULTIPLATFORM && PPC32

arch/powerpc/platforms/embedded6xx/Kconfig

@@ -146,15 +146,6 @@ config PQ2FADS
 	  Select PQ2FADS if you wish to configure for a Freescale
 	  PQ2FADS board (-VR or -ZU).
 
-config LITE5200
-	bool "Freescale LITE5200 / (IceCube)"
-	select PPC_MPC52xx
-	help
-	  Support for the LITE5200 dev board for the MPC5200 from Freescale.
-	  This is for the LITE5200 version 2.0 board. Don't know if it changes
-	  much but it's only been tested on this board version. I think this
-	  board is also known as IceCube.
-
 config EV64360
 	bool "Marvell-EV64360BP"
 	help
@@ -172,9 +163,6 @@ config TQM8xxL
 	depends on 8xx && (TQM823L || TQM850L || FPS850L || TQM855L || TQM860L)
 	default y
 
-config PPC_MPC52xx
-	bool
-
 config 8260
 	bool "CPM2 Support" if WILLOW
 	depends on 6xx