clk: imx8mp: add clkout1/2 support

stable inclusion
from stable-v5.10.164
commit cb769960ef48fee1045bc8eca2ac0cf56d876b33
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7T7G4

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=cb769960ef48fee1045bc8eca2ac0cf56d876b33



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[ Upstream commit 43896f56 ]

clkout1 and clkout2 allow to supply clocks from the SoC to the board,
which is used by some board designs to provide reference clocks.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Link: https://lore.kernel.org/r/20220427162131.3127303-1-l.stach@pengutronix.de


Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Stable-dep-of: 5c1f7f10 ("dt-bindings: clocks: imx8mp: Add ID for usb suspend clock")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>