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/VCMA9_defconfig b/configs/VCMA9_defconfig
index 123562c..e6646fa 100644
--- a/configs/VCMA9_defconfig
+++ b/configs/VCMA9_defconfig
@@ -1,5 +1,6 @@
 CONFIG_ARM=y
 CONFIG_TARGET_VCMA9=y
+CONFIG_IDENT_STRING="\n(c) 2003 - 2011 by MPL AG Switzerland, MEV-10080-001 unstable"
 CONFIG_BOOTDELAY=5
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="VCMA9 # "