staging: rtl8192e: Init tx_pwr_level_cck_a and friends directly

staging: rtl8192e: Init tx_pwr_level_cck_a and friends directly

The arrays EEPROMRfACCKChnl1TxPwLevel, EEPROMRfAOfdmChnlTxPwLevel,
EEPROMRfCCCKChnl1TxPwLevel, EEPROMRfCOfdmChnlTxPwLevel are initialized to
zero and never changed. Delete the arrays and set the variables directly
to zero to avoid CamelCase which is not accepted by checkpatch.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/9874e99fb9a803be2a89e81e2ecd01ba80398ea1.1674244819.git.philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>