phy: rockchip: samsung-hdptx: Use usleep_range() instead of udelay()

rk_hdptx_dp_reset() is allowed to sleep, hence replace the busy waiting
with usleep_range(), to allow other threads to run.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260113-phy-hdptx-frl-v6-2-8d5f97419c0b@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: cristicc

drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c

@@ -1042,7 +1042,7 @@ static void rk_hdptx_dp_reset(struct rk_hdptx_phy *hdptx)
 	reset_control_assert(hdptx->rsts[RST_INIT].rstc);
 
 	reset_control_assert(hdptx->rsts[RST_APB].rstc);
-	udelay(10);
+	usleep_range(10, 15);
 	reset_control_deassert(hdptx->rsts[RST_APB].rstc);
 
 	regmap_update_bits(hdptx->regmap, LANE_REG(0301),