powerpc/47x: Enable CRASH_DUMP

Now that we have KEXEC and relocatable kernel working on 47x (!SMP)
enable CRASH_DUMP.

Signed-off-by: Suzuki K. Poulose <suzuki@in.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e588bac..38786c8 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -370,7 +370,7 @@
 
 config CRASH_DUMP
 	bool "Build a kdump crash kernel"
-	depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x)
+	depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 	select RELOCATABLE if PPC64 || 44x
 	select DYNAMIC_MEMSTART if FSL_BOOKE
 	help