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/comtrend_wap5813n_ram_defconfig b/configs/comtrend_wap5813n_ram_defconfig
index 198f13b..722b719 100644
--- a/configs/comtrend_wap5813n_ram_defconfig
+++ b/configs/comtrend_wap5813n_ram_defconfig
@@ -13,6 +13,7 @@
 # CONFIG_MIPS_BOOT_ENV_LEGACY is not set
 CONFIG_MIPS_BOOT_FDT=y
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_REMAKE_ELF=y
 CONFIG_SYS_LOAD_ADDR=0x80100000
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_DISPLAY_CPUINFO=y