The ornamental design for a faucet, as shown and described.
FIG. 1 is a front perspective view of a faucet showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a cross-sectional view taken through line 8-8 of FIG. 4.
The broken line showing of the interior portion of the base in FIG. 7, the circular channel in FIG. 8, and the lever in FIGS. 1-6 is for environmental purposes only and forms no part of the claimed design.