so many if conditions in _rtl92c_store_pwrIndex_diffrate_offset.

Hi wireless folks,

in _rtl92c_store_pwrIndex_diffrate_offset (
drivers/net/wireless/rtlwifi/rtl8192c/phy_common.c), there are lot of
if conditions, checking the register address.
my understanding is that if the register address matches to a
particular rate, we set the txpower level to a particular group. but
it is even possible with the switch or if else if statements,
 please correct me if i am wrong.

Thanks,
Dev.