arm64: dts: rockchip: Add Bluetooth on rk3576-evb1-v10

arm64: dts: rockchip: Add Bluetooth on rk3576-evb1-v10

Add device tree nodes to enable Bluetooth in the Ampak AP6275P module
found on Rockchip RK3576 EVB1 and connected over a UART link.

Note that this doesn't enable the out-of-band PCM connection. It's
routed to SAI2 M0 pins in case anyone wishes to add it.

Tested-by: Pavel Zhovner <pavel@flipperdevices.com>
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Link: https://lore.kernel.org/r/20250813-evb1-rtcwifibt-v1-3-d13c83422971@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>