thermal: Remove ARCH_KIRKWOOD dependency

mach-kirkwood has been removed, now that kirkwood lives in mach-mvebu.
Depend on MACH_KIRKWOOD, which will be set when kirkwood is built as
part of ARCH_MVEBU.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Acked-by: NEduardo Valentin <edubezval@gmail.com>
Link: https://lkml.kernel.org/r/1409417172-6846-4-git-send-email-andrew@lunn.chSigned-off-by: NJason Cooper <jason@lakedaemon.net>

drivers/thermal/Kconfig

@@ -143,7 +143,7 @@ config RCAR_THERMAL
 
 config KIRKWOOD_THERMAL
 	tristate "Temperature sensor on Marvell Kirkwood SoCs"
-	depends on ARCH_KIRKWOOD || MACH_KIRKWOOD
+	depends on MACH_KIRKWOOD
 	depends on OF
 	help
 	  Support for the Kirkwood thermal sensor driver into the Linux thermal