wifi: rtlwifi: rtl8192ee: using calculate_bit_shift()

Using calculate_bit_shift() to replace _rtl92ee_phy_calculate_bit_shift().
And fix the undefined bitwise shift behavior problem.

Fixes: b1a3bfc9 ("rtlwifi: rtl8192ee: Move driver from staging to the regular tree")
Signed-off-by: Su Hui <suhui@nfschina.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231219065739.1895666-9-suhui@nfschina.com