[PATCH] ARM: mx7: psci: fix suspend/resume e10133 workaround

[sbabic at denx.de]

> The e10133 workaround was broken in two places:
> - The code intended to temporarily mask all interrupts in GPC_IMRx_CORE0.
>   While the old register values were saved, the actual masking was
>   missing.
> - imx_udelay() expects the system counter to run at its base frequency,
>   but the system counter is switched to a lower frequency earlier in
>   psci_system_suspend(), leading to a much longer delay than intended.
>   Replace the call with an equivalent loop (linux-imx 5.15 does the same)
> This fixes the SoC hanging forever when there was already a wakeup IRQ
> pending while suspending.
> Fixes: 57b620255e ("imx: mx7: add system suspend/resume support")
> Signed-off-by: Matthias Schiffer <matthias.schiffer at ew.tq-group.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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