Kconfig: Move config IDENT_STRING to Kconfig

Move the config IDENT_STRING to Kconfig and migrate all boards

[sivadur: Migrate zynq boards]
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
[trini: Update configs, add some default to sunxi Kconfig]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/smdkv310_defconfig b/configs/smdkv310_defconfig
index 5e3844c..c8c182b 100644
--- a/configs/smdkv310_defconfig
+++ b/configs/smdkv310_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_EXYNOS=y
 CONFIG_ARCH_EXYNOS4=y
+CONFIG_IDENT_STRING=" for SMDKC210/V310"
 CONFIG_DEFAULT_DEVICE_TREE="exynos4210-smdkv310"
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y