powerpc: Fix incorrect PPC32 PAMU dependency

The Freescale PAMU can be enabled on both 32 and 64-bit
Power chips. Commit 477ab7a1 restricted PAMU to PPC32.
PPC covers both.
Signed-off-by: NAndy Fleming <afleming@gmail.com>
Signed-off-by: NJoerg Roedel <jroedel@suse.de>

drivers/iommu/Kconfig

@@ -76,8 +76,7 @@ config IOMMU_DMA
 
 config FSL_PAMU
 	bool "Freescale IOMMU support"
-	depends on PPC32
-	depends on PPC_E500MC || COMPILE_TEST
+	depends on PPC_E500MC || (COMPILE_TEST && PPC)
 	select IOMMU_API
 	select GENERIC_ALLOCATOR
 	help