Convert CONFIG_REMAKE_ELF to Kconfig

This converts the following to Kconfig:
   CONFIG_REMAKE_ELF

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
diff --git a/configs/xilinx_zynqmp_mini_qspi_defconfig b/configs/xilinx_zynqmp_mini_qspi_defconfig
index 78c9d29..f9b7d24 100644
--- a/configs/xilinx_zynqmp_mini_qspi_defconfig
+++ b/configs/xilinx_zynqmp_mini_qspi_defconfig
@@ -14,6 +14,7 @@
 # CONFIG_CMD_ZYNQMP is not set
 # CONFIG_PSCI_RESET is not set
 # CONFIG_EXPERT is not set
+CONFIG_REMAKE_ELF=y
 CONFIG_SYS_LOAD_ADDR=0x8000000
 # CONFIG_LEGACY_IMAGE_FORMAT is not set
 # CONFIG_AUTOBOOT is not set