PM / devfreq: Remove redundant devfreq_get_freq_range() calling in devfreq_add_device()

The calling of devfreq_get_freq_range() in devfreq_add_device() is
redundant because min_freq and max_freq are never used. Remove it.

Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Link: https://lore.kernel.org/lkml/20250421030020.3108405-4-zhenglifeng1@huawei.com/


Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>