minui: Match API to AOSP

 * AOSP added a "bold" flag for image based fonts. Stay compatible
   with that API since there are other components using minui.

Change-Id: I6c0f12f7f8f1df8dd27779b47883ccff96f2d291
Signed-off-by: Grarak <williye97@gmail.com>

Conflicts:
	ui.c
Add guard makefile for allowing simple recovery build

Change-Id: I6ec438f61cafce69c5083977c4330277f56aa060