Revert "x86: Switch QEMU over to use the bochs driver"

Unfortunately the bochs driver does not currently work with distros.
It causes a hang between grub menu selection and the OS displaying
something.

Preliminary investigation shows that GRUB does not jump to the kernel
at all.

This reproduces reliably.

This reverts commit b8956425d525c3c25fd218f252f89a5e44df6a9f.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com> # qemu-x86_64
[Slightly modify the commit message about preliminary investigation]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/qemu-x86_defconfig b/configs/qemu-x86_defconfig
index 95a6ff9..56788cd 100644
--- a/configs/qemu-x86_defconfig
+++ b/configs/qemu-x86_defconfig
@@ -53,6 +53,9 @@
 CONFIG_SYS_NS16550_PORT_MAPPED=y
 CONFIG_SPI=y
 CONFIG_USB_KEYBOARD=y
+CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
+CONFIG_FRAMEBUFFER_VESA_MODE_USER=y
+CONFIG_FRAMEBUFFER_VESA_MODE=0x144
 CONFIG_CONSOLE_SCROLL_LINES=5
 CONFIG_GENERATE_ACPI_TABLE=y
 # CONFIG_GZIP is not set