powerpc: 32-bit powermac needs the mpc106 code

Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9589d621..c71ddc0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -293,6 +293,7 @@
 	bool "  Apple PowerMac based machines"
 	depends on PPC_MULTIPLATFORM
 	select PPC_INDIRECT_PCI if PPC32
+	select PPC_MPC106 if PPC32
 	default y
 
 config PPC_PMAC64