arm64: dts: rockchip: Fix USB power enable pin for BTT CB2 and Pi2

arm64: dts: rockchip: Fix USB power enable pin for BTT CB2 and Pi2

 Fix typo into regulator GPIO definition. With current
 definition - USB powered off. Valid definition can be found on "pinctrl"
 section:
 		vcc5v0_usb2t_en: vcc5v0-usb2t-en {
 				rockchip,pins = <3 RK_PD5 RK_FUNC_GPIO &pcfg_pull_none>;
 				 		};

 		vcc5v0_usb2b_en: vcc5v0-usb2b-en {
 			rockchip,pins = <4 RK_PC4 RK_FUNC_GPIO &pcfg_pull_none>;
 		};

Fixes: bfbc663d2733a ("arm64: dts: rockchip: Add BigTreeTech CB2 and Pi2")
Signed-off-by: Andrey Leonchikov <andreil499@gmail.com>
Link: https://patch.msgid.link/20251105210741.850031-1-andreil499@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>