boot/platform/efi: Don't 'enable' graphics mode; solves #16753

* Console-control is non-standard, but is needed on older Apple
  hardware to transition their EFI bioses to text-mode so our
  bootloader menu can be used / seen.
* Console-control seems to exist on some older Intel hardware as
  well. Enabling it breaks our keyboard support. (maybe when enabled
  a different legacy UEFI call needs used to input or something)
* Instead of trying to use a deprecated EFI call in a meaningful
  way, just do the "bare minimum" of disabling it when it exists.

Change-Id: I20c3e026e02996371f632361c6899532c195bbf8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3685
Reviewed-by: Adrien Destugues <[email protected]>

src/system/boot/platform/efi/console.cpp

@@ -249,7 +249,10 @@ console_control(bool graphics)
 status_t
 console_init(void)
 {
-	console_control(true);
+	// Solves video issues on Apple hardware. This is non-standard and
+	// deprecated and should not be used for anything else!
+	console_control(false);
+
 	update_screen_size();
 	console_hide_cursor();
 	console_clear_screen();