Implement EDID support for getting the preferred screen resolution

xtldr/modules/framebuf/includes/framebuf.h

@@ -24,6 +24,11 @@ FbGetDisplayInformation(OUT PEFI_PHYSICAL_ADDRESS FrameBufferBase,
                         OUT PULONG_PTR FrameBufferSize,
                         OUT PXTBL_FRAMEBUFFER_MODE_INFORMATION ModeInfo);
 
+XTCDECL
+EFI_STATUS
+FbGetPreferredScreenResolution(OUT PUINT PreferredWidth,
+                               OUT PUINT PreferredHeight);
+
 XTCDECL
 EFI_STATUS
 FbInitializeDisplay();