usb: dwc3-meson-g12a: constify drvdata structs

Constify the drvdata structs. This also matches the definition of
member drvdata in dwc3_meson_g12a.
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/a3c178c9-7c33-d7b8-9f6e-734dc28728ab@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/dwc3/dwc3-meson-g12a.c

@@ -188,7 +188,7 @@ static int dwc3_meson_gxl_usb_post_init(struct dwc3_meson_g12a *priv);
  * reset to recover usage of the port.
  */
 
-static struct dwc3_meson_g12a_drvdata gxl_drvdata = {
+static const struct dwc3_meson_g12a_drvdata gxl_drvdata = {
 	.otg_switch_supported = true,
 	.otg_phy_host_port_disable = true,
 	.clks = meson_gxl_clocks,
@@ -202,7 +202,7 @@ static struct dwc3_meson_g12a_drvdata gxl_drvdata = {
 	.usb_post_init = dwc3_meson_gxl_usb_post_init,
 };
 
-static struct dwc3_meson_g12a_drvdata gxm_drvdata = {
+static const struct dwc3_meson_g12a_drvdata gxm_drvdata = {
 	.otg_switch_supported = true,
 	.otg_phy_host_port_disable = true,
 	.clks = meson_gxl_clocks,
@@ -216,7 +216,7 @@ static struct dwc3_meson_g12a_drvdata gxm_drvdata = {
 	.usb_post_init = dwc3_meson_gxl_usb_post_init,
 };
 
-static struct dwc3_meson_g12a_drvdata axg_drvdata = {
+static const struct dwc3_meson_g12a_drvdata axg_drvdata = {
 	.otg_switch_supported = true,
 	.clks = meson_gxl_clocks,
 	.num_clks = ARRAY_SIZE(meson_gxl_clocks),
@@ -229,7 +229,7 @@ static struct dwc3_meson_g12a_drvdata axg_drvdata = {
 	.usb_post_init = dwc3_meson_gxl_usb_post_init,
 };
 
-static struct dwc3_meson_g12a_drvdata g12a_drvdata = {
+static const struct dwc3_meson_g12a_drvdata g12a_drvdata = {
 	.otg_switch_supported = true,
 	.clks = meson_g12a_clocks,
 	.num_clks = ARRAY_SIZE(meson_g12a_clocks),
@@ -241,7 +241,7 @@ static struct dwc3_meson_g12a_drvdata g12a_drvdata = {
 	.usb_init = dwc3_meson_g12a_usb_init,
 };
 
-static struct dwc3_meson_g12a_drvdata a1_drvdata = {
+static const struct dwc3_meson_g12a_drvdata a1_drvdata = {
 	.otg_switch_supported = false,
 	.clks = meson_a1_clocks,
 	.num_clks = ARRAY_SIZE(meson_a1_clocks),