arm64: dts: imx8mm-evk: correct pmic clock source

stable inclusion
from stable-v5.10.179
commit 08b78037c4f1476f5537b4e900ea0f151ea219e8
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8C809

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=08b78037c4f1476f5537b4e900ea0f151ea219e8



--------------------------------

[ Upstream commit 85af7ffd ]

The osc_32k supports #clock-cells as 0, using an id is wrong, drop it.

Fixes: a6a355ed ("arm64: dts: imx8mm-evk: Add 32.768 kHz clock to PMIC")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>
(cherry picked from commit 760ed6fe)