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/ls2080a_emu_defconfig b/configs/ls2080a_emu_defconfig
index 21a0283..dfc1415 100644
--- a/configs/ls2080a_emu_defconfig
+++ b/configs/ls2080a_emu_defconfig
@@ -1,5 +1,6 @@
 CONFIG_ARM=y
 CONFIG_TARGET_LS2080A_EMU=y
+CONFIG_IDENT_STRING=" LS2080A-EMU"
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y