CVE-2026-99161: i2c: viai2c-wmt: Fix clock leak in wmt_i2c_probe()

In the Linux kernel, the following vulnerability has been resolved:

i2c: viai2c-wmt: Fix clock leak in wmti2cprobe()

In wmti2cprobe(), i2c->clk is acquired using ofclkget(). If any subsequent operation fails or when the module is unloaded, the clock reference count is never decremented via clkput(), leading to a resource leak.

Switch to devmclkget() so that the clock is automatically managed and released.