Includes fixes for:
"xf86Config.c", line 2434: warning: argument #1 is incompatible with prototype:
prototype: pointer to struct _DisplayModeRec: "xf86.h", line 351
argument : pointer to const struct _DisplayModeRec
"xf86EdidModes.c", line 312: warning: argument #1 is incompatible with prototype:
prototype: pointer to struct _DisplayModeRec: "../../../hw/xfree86/common/xf86.h", line 351
argument : pointer to const struct _DisplayModeRec
"xf86EdidModes.c", line 438: warning: assignment type mismatch:
pointer to struct _DisplayModeRec "=" pointer to const struct _DisplayModeRec
"xf86Modes.c", line 701: warning: assignment type mismatch:
pointer to struct _DisplayModeRec "=" pointer to const struct _DisplayModeRec