thunderbolt: Make tb_switch_clx_is_supported() static

This function is not used outside of clx.c so make it static. No
functional changes.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/clx.c

@@ -174,6 +174,28 @@ bool tb_port_clx_is_enabled(struct tb_port *port, unsigned int clx)
 	return !!(tb_port_clx(port) & clx);
 }
 
+/**
+ * tb_switch_clx_is_supported() - Is CLx supported on this type of router
+ * @sw: The router to check CLx support for
+ */
+static bool tb_switch_clx_is_supported(const struct tb_switch *sw)
+{
+	if (!clx_enabled)
+		return false;
+
+	if (sw->quirks & QUIRK_NO_CLX)
+		return false;
+
+	/*
+	 * CLx is not enabled and validated on Intel USB4 platforms
+	 * before Alder Lake.
+	 */
+	if (tb_switch_is_tiger_lake(sw))
+		return false;
+
+	return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
+}
+
 /**
  * tb_switch_clx_init() - Initialize router CL states
  * @sw: Router
@@ -273,28 +295,6 @@ static int tb_switch_mask_clx_objections(struct tb_switch *sw)
 			   sw->cap_lp + offset, ARRAY_SIZE(val));
 }
 
-/**
- * tb_switch_clx_is_supported() - Is CLx supported on this type of router
- * @sw: The router to check CLx support for
- */
-bool tb_switch_clx_is_supported(const struct tb_switch *sw)
-{
-	if (!clx_enabled)
-		return false;
-
-	if (sw->quirks & QUIRK_NO_CLX)
-		return false;
-
-	/*
-	 * CLx is not enabled and validated on Intel USB4 platforms
-	 * before Alder Lake.
-	 */
-	if (tb_switch_is_tiger_lake(sw))
-		return false;
-
-	return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
-}
-
 static bool validate_mask(unsigned int clx)
 {
 	/* Previous states need to be enabled */

drivers/thunderbolt/tb.h

@@ -1001,7 +1001,6 @@ static inline bool tb_switch_tmu_is_enabled(const struct tb_switch *sw)
 bool tb_port_clx_is_enabled(struct tb_port *port, unsigned int clx);
 
 int tb_switch_clx_init(struct tb_switch *sw);
-bool tb_switch_clx_is_supported(const struct tb_switch *sw);
 int tb_switch_clx_enable(struct tb_switch *sw, unsigned int clx);
 int tb_switch_clx_disable(struct tb_switch *sw);