I claim the ornamental design for a display mounting bracket, as shown and described.
FIG. 1 is a perspective view of a display mounting bracket of the present invention;
FIG. 2 is a front view of thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a front perspective view thereof with two lines of display side mounting brackets and a wall side mounting bracket being separately shown;
FIG. 9 is a rear perspective view thereof with two lines of display side mounting brackets and a wall side mounting bracket being separately shown; and,
FIG. 10 is a perspective view thereof with the bracket being extended vertically.
The broken lines show parts of the frame unit for the display mounting bracket that represent unclaimed subject matter and form no part of the claimed design. Additionally, the unevenly broken lines in the drawings define the limits of the claimed design.