CVE-2025-38040 serial: mctrl_gpio: split disable_ms into sync and no_sync APIs

In the Linux kernel, the following vulnerability has been resolved: serial: mctrlgpio: split disablems into sync and nosync APIs The following splat has been observed on a SAMA5D27 platform using atmelserial: BUG: sleeping function called from invalid context at kernel/irq/manage.c:738 inatomic: ...