drm/i915: Stop printing pipe name as hex

Print the pipe name in ascii rather than hex.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231122093137.1509-3-ville.syrjala@linux.intel.comReviewed-by: Jouni Högander <jouni.hogander@intel.com>

drivers/gpu/drm/i915/display/intel_dpll_mgr.c

@@ -4537,7 +4537,7 @@ void intel_shared_dpll_state_verify(struct intel_atomic_state *state,
 				"pll active mismatch (didn't expect pipe %c in active mask (0x%x))\n",
 				pipe_name(crtc->pipe), pll->active_mask);
 		I915_STATE_WARN(i915, pll->state.pipe_mask & pipe_mask,
-				"pll enabled crtcs mismatch (found %x in enabled mask (0x%x))\n",
+				"pll enabled crtcs mismatch (found pipe %c in enabled mask (0x%x))\n",
 				pipe_name(crtc->pipe), pll->state.pipe_mask);
 	}
 }