arm: zynq: Add identification string to Xilinx boards

It is good to see this string to make sure that u-boot which runs on the
board is the same which should run there.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

configs/zynq_zc702_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_SYS_CONFIG_NAME="zynq_zc70x"
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+CONFIG_IDENT_STRING=" Xilinx Zynq ZC702"
 CONFIG_SPL_STACK_R_ADDR=0x200000
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc702"
 CONFIG_DEBUG_UART=y

configs/zynq_zc706_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_SYS_CONFIG_NAME="zynq_zc70x"
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+CONFIG_IDENT_STRING=" Xilinx Zynq ZC706"
 CONFIG_SPL_STACK_R_ADDR=0x200000
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc706"
 CONFIG_DEBUG_UART=y

configs/zynq_zc770_xm010_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+CONFIG_IDENT_STRING=" Xilinx Zynq ZC770 XM010"
 CONFIG_SPL_STACK_R_ADDR=0x200000
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm010"
 CONFIG_DEBUG_UART=y

configs/zynq_zc770_xm011_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+CONFIG_IDENT_STRING=" Xilinx Zynq ZC770 XM011"
 CONFIG_SPL_STACK_R_ADDR=0x200000
 # CONFIG_SPL_FAT_SUPPORT is not set
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm011"

configs/zynq_zc770_xm012_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+CONFIG_IDENT_STRING=" Xilinx Zynq ZC770 XM012"
 CONFIG_SPL_STACK_R_ADDR=0x200000
 # CONFIG_SPL_FAT_SUPPORT is not set
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm012"

configs/zynq_zc770_xm013_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+CONFIG_IDENT_STRING=" Xilinx Zynq ZC770 XM013"
 CONFIG_SPL_STACK_R_ADDR=0x200000
 # CONFIG_SPL_FAT_SUPPORT is not set
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm013"