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/socfpga_stratix10_defconfig b/configs/socfpga_stratix10_defconfig
index 0ae73d4..8249a12 100644
--- a/configs/socfpga_stratix10_defconfig
+++ b/configs/socfpga_stratix10_defconfig
@@ -17,6 +17,7 @@
 # CONFIG_PSCI_RESET is not set
 CONFIG_OPTIMIZE_INLINING=y
 CONFIG_SPL_OPTIMIZE_INLINING=y
+CONFIG_REMAKE_ELF=y
 CONFIG_SYS_LOAD_ADDR=0x02000000
 CONFIG_BOOTDELAY=5
 CONFIG_USE_BOOTARGS=y