mb/asrock/h77pro4-m: Use VBT provided by Linux' debugfs

The current VBT causes problems with Windows 10. Once the Intel driver
is used instead of the generic graphics driver, the display turns off
although the system keeps running normally. Linux has no issues. It had
been extracted from the vendor video BIOS, which in turn had been
extracted from the vendor firmware.

This change replaces the VBT with one that was dumped through debugfs
and the drm/i915 driver in Linux, booted from the vendor firmware at
version 2.10 (beta). It fixes the issue with the Intel graphics driver
on Windows 10.

Change-Id: Icbb3950b37dad5ed308f3bafb73b71859227d26b
Signed-off-by: Michael Büchler <michael.buechler@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73711
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

Documentation/mainboard/asrock/h77pro4-m.md

@@ -45,7 +45,9 @@ Tests were done with SeaBIOS 1.14.0 and slackware64-live from 2019-07-12
 - Rear eSATA connector (multiplexed with one ASM1061 port)
 - Gigabit Ethernet
 - Console output on the serial port
-- SeaBIOS 1.14.0 and 1.15.0 to boot Windows 10 (needs VGA BIOS) and Linux via
+- EDK II (MrChromebox's fork, at origin/uefipayload_202207) to boot
+Windows 10 (22H2) and Linux (5.19.17) via GRUB 2
+- SeaBIOS 1.16.1 to boot Windows 10 (needs VGA BIOS) and Linux via
 extlinux
 - Internal flashing with flashrom-1.2, see
 [Internal Programming](#internal-programming)