efi_loader: enable CONFIG_CMD_NVEDIT_EFI on QEMU

To reduce the default image size CONFIG_CMD_NVEDIT_EFI was disabled by
default. Re-enable it on the QEMU platforms supporting the UEFI sub-system.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/configs/qemu_arm64_defconfig b/configs/qemu_arm64_defconfig
index 7237819..533195b 100644
--- a/configs/qemu_arm64_defconfig
+++ b/configs/qemu_arm64_defconfig
@@ -9,6 +9,7 @@
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_CMD_BOOTEFI_SELFTEST=y
+CONFIG_CMD_NVEDIT_EFI=y
 CONFIG_CMD_PCI=y
 CONFIG_CMD_USB=y
 CONFIG_OF_BOARD=y