efi_loader: unset CONFIG_EFI_LOADER on vf610twr

vf610twr_defconfig and vf610twr_nand_defconfig suffer from tight memory
restrictions. Disable CONFIG_EFI_LOADER for these boards.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/configs/vf610twr_nand_defconfig b/configs/vf610twr_nand_defconfig
index 560776f..0a1e28e 100644
--- a/configs/vf610twr_nand_defconfig
+++ b/configs/vf610twr_nand_defconfig
@@ -41,4 +41,4 @@
 CONFIG_MII=y
 CONFIG_DM_SERIAL=y
 CONFIG_FSL_LPUART=y
-# CONFIG_EFI_UNICODE_CAPITALIZATION is not set
+# CONFIG_EFI_LOADER is not set