ARM: Kirkwood: fix Makefile.boot

While building the dtbs target, one is getting:

make dtbs
make[1]: *** No rule to make target `arch/arm/boot/kirkwood-qnap-ts219.dtb', needed by `arch/arm/boot/dtbs'.  Stop.
make: *** [dtbs] Error 2

The reason is that there's no kirkwood-qnap-ts219.dts file. Update Makefile.boot
to reflect the dts files present.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/mach-kirkwood/Makefile.boot

@@ -7,7 +7,8 @@ dtb-$(CONFIG_MACH_DLINK_KIRKWOOD_DT) += kirkwood-dns320.dtb
 dtb-$(CONFIG_MACH_DLINK_KIRKWOOD_DT) += kirkwood-dns325.dtb
 dtb-$(CONFIG_MACH_ICONNECT_DT) += kirkwood-iconnect.dtb
 dtb-$(CONFIG_MACH_IB62X0_DT) += kirkwood-ib62x0.dtb
-dtb-$(CONFIG_MACH_TS219_DT)	+= kirkwood-qnap-ts219.dtb
+dtb-$(CONFIG_MACH_TS219_DT)	+= kirkwood-ts219-6281.dtb
+dtb-$(CONFIG_MACH_TS219_DT)	+= kirkwood-ts219-6282.dtb
 dtb-$(CONFIG_MACH_GOFLEXNET_DT) += kirkwood-goflexnet.dtb
 dbt-$(CONFIG_MACH_LSXL_DT) += kirkwood-lschlv2.dtb
 dbt-$(CONFIG_MACH_LSXL_DT) += kirkwood-lsxhl.dtb