macintosh/via-pmu: Explicitly specify CONFIG_PPC_PMAC dependencies

At present, CONFIG_ADB_PMU depends on CONFIG_PPC_PMAC. When this gets
relaxed to CONFIG_PPC_PMAC || CONFIG_MAC, those Kconfig symbols with
implicit deps on PPC_PMAC will need explicit deps. Add them now.
No functional change.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

drivers/macintosh/Kconfig

@@ -79,7 +79,7 @@ config ADB_PMU
 
 config ADB_PMU_LED
 	bool "Support for the Power/iBook front LED"
-	depends on ADB_PMU
+	depends on PPC_PMAC && ADB_PMU
 	select NEW_LEDS
 	select LEDS_CLASS
 	help
@@ -122,7 +122,7 @@ config PMAC_MEDIABAY
 
 config PMAC_BACKLIGHT
 	bool "Backlight control for LCD screens"
-	depends on ADB_PMU && FB = y && (BROKEN || !PPC64)
+	depends on PPC_PMAC && ADB_PMU && FB = y && (BROKEN || !PPC64)
 	select FB_BACKLIGHT
 	help
 	  Say Y here to enable Macintosh specific extensions of the generic