The ornamental design for the front panel for an automobile, as shown and described.
FIG. 1 is a front left perspective view of a front panel for an automobile showing our new design;
FIG. 2 is a rear right perspective view thereof;
FIG. 3 is a front left perspective view thereof;
FIG. 4 is a rear left perspective view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a right side elevation view thereof;
FIG. 8 is a left side elevation view thereof; and,
FIG. 9 is a top plan view thereof.
The bottom view forms no part of the claimed design. The portion of the automobile in light contrast is environment and forms no part of the claimed design.