m68knommu: add support for the ColdFire 547x family of processors

The Freescale M547x family of ColdFire processors is very similar
to the M548x series. We use all the same support for it. Initially
all we need is a high level configuration option for it.
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

arch/m68knommu/Kconfig

@@ -168,6 +168,11 @@ config M5407
 	help
 	  Motorola ColdFire 5407 processor support.
 
+config M547x
+	bool "MCF547x"
+	help
+	  Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support.
+
 config M548x
 	bool "MCF548x"
 	help
@@ -183,7 +188,7 @@ config M527x
 
 config M54xx
 	bool
-	depends on M548x
+	depends on (M548x || M547x)
 	default y
 
 config COLDFIRE