tools: Compile kwboot for Marvell Armada XP as those SoCs are now supported

Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Luka Perkov <luka@openwrt.org>

tools/Makefile

@@ -140,6 +140,7 @@ ubsha1-objs := os_support.o ubsha1.o lib/sha1.o
 HOSTCFLAGS_ubsha1.o := -pedantic
 
 hostprogs-$(CONFIG_KIRKWOOD) += kwboot
+hostprogs-$(CONFIG_ARMADA_XP) += kwboot
 hostprogs-y += proftool
 hostprogs-$(CONFIG_STATIC_RELA) += relocate-rela