zipitz2: restore board support

zipitz2 was dropped in 49d8899ba9c26335e4a12e01c18028fc5e40c796

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ab986d3..e668994c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -687,6 +687,10 @@
 	bool "Support h2200"
 	select CPU_PXA
 
+config TARGET_ZIPITZ2
+	bool "Support zipitz2"
+	select CPU_PXA
+
 config TARGET_COLIBRI_PXA270
 	bool "Support colibri_pxa270"
 	select CPU_PXA
@@ -860,6 +864,7 @@
 source "board/vscom/baltos/Kconfig"
 source "board/woodburn/Kconfig"
 source "board/work-microwave/work_92105/Kconfig"
+source "board/zipitz2/Kconfig"
 
 source "arch/arm/Kconfig.debug"