drm/i915/tc: rename mtl_tc_port_get_pin_assignment_mask()

This function doesn't really return the pin assignment mask, but the
max lane count derived from that.  So rename the function to
mtl_tc_port_get_max_lane_count() to better reflect what it really does.
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230825081638.275795-2-luciano.coelho@intel.com

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

@@ -290,7 +290,7 @@ u32 intel_tc_port_get_pin_assignment_mask(struct intel_digital_port *dig_port)
 	       DP_PIN_ASSIGNMENT_SHIFT(tc->phy_fia_idx);
 }
 
-static int mtl_tc_port_get_pin_assignment_mask(struct intel_digital_port *dig_port)
+static int mtl_tc_port_get_max_lane_count(struct intel_digital_port *dig_port)
 {
 	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
 	intel_wakeref_t wakeref;
@@ -325,7 +325,7 @@ int intel_tc_port_fia_max_lane_count(struct intel_digital_port *dig_port)
 	assert_tc_cold_blocked(tc);
 
 	if (DISPLAY_VER(i915) >= 14)
-		return mtl_tc_port_get_pin_assignment_mask(dig_port);
+		return mtl_tc_port_get_max_lane_count(dig_port);
 
 	lane_mask = 0;
 	with_intel_display_power(i915, POWER_DOMAIN_DISPLAY_CORE, wakeref)