phy: rockchip: naneng-combphy: compatible reset with old DT

The device tree of RK3568 did not specify reset-names before.
So add fallback to old behaviour to be compatible with old DT.

Fixes: fbcbffba ("phy: rockchip: naneng-combphy: fix phy reset")
Cc: Jianfeng Liu <liujianfeng1994@gmail.com>
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20250106100001.1344418-2-amadeus@jmu.edu.cn


Signed-off-by: Vinod Koul <vkoul@kernel.org>