usb: dwc2: Replace uint<x>_t types with u<x>

usb: dwc2: Replace uint<x>_t types with u<x>

Updates all instances of uint8_t, uint16_t, and uint32_t to u8, u16, and
u32 respectively, ensuring consistent use of kernel-preferred types and
resolving checkpatch.pl warnings.

Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20250110-dwc2-dev-v4-8-987f4fd6f8b2@pigmoral.tech
Signed-off-by: Mattijs Korpershoek <mkorpershoek@kernel.org>