x86: Don't try to run the VGA BIOS in 64-bit mode

This is not supported, so disable it for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/lib/Makefile

@@ -5,9 +5,11 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
+ifndef CONFIG_X86_64
 obj-y += bios.o
 obj-y += bios_asm.o
 obj-y += bios_interrupts.o
+endif
 obj-$(CONFIG_CMD_BOOTM) += bootm.o
 obj-y	+= cmd_boot.o
 obj-$(CONFIG_SEABIOS) += coreboot_table.o

drivers/pci/pci_rom.c

@@ -334,7 +334,7 @@ int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
 			goto err;
 #endif
 	} else {
-#ifdef CONFIG_X86
+#if defined(CONFIG_X86) && CONFIG_IS_ENABLED(X86_32BIT_INIT)
 		bios_set_interrupt_handler(0x15, int15_handler);
 
 		bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,