drivers: i3c: shell: align `struct shell *` argument name to `sh`

Aligned the `struct shell *` argument name from `shell_ctx` to `sh`
for consistency with other drivers' usage of `sh`, and to match
the `shell_cmd_handler` argument name.

Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
1 file changed