[POWERPC] 44x: Fix Kconfig formatting

Clean up some whitespace issues in the 44x Kconfig file.
Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>

arch/powerpc/platforms/44x/Kconfig

@@ -119,8 +119,8 @@ config 440SP
 	bool
 
 config 440SPe
-        select IBM_NEW_EMAC_EMAC4
 	bool
+	select IBM_NEW_EMAC_EMAC4
 
 # 44x errata/workaround config symbols, selected by the CPU models above
 config IBM440EP_ERR42