i3c: dw: Add hot-join support.

[ Upstream commit 1d083260 ]

Add hot-join support for dw i3c master controller.
By default, the hot-join acknowledgment is disabled, and the hardware will
automatically send the DISEC CCC when it receives the hot-join request.
Users can use the sys entry to enable it.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Link: https://lore.kernel.org/r/20240429073624.256830-1-billy_tsai@aspeedtech.com


Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Stable-dep-of: b75439c9 ("i3c: dw: Fix use-after-free in dw_i3c_master driver due to race condition")
Signed-off-by: Sasha Levin <sashal@kernel.org>