rtlwifi: 8192de: Reduce indentation and fix coding style

This commit doesn't change logic at all. Since indentation is lower, the
wrapped statements can be put in single line that will become more
readable.
Signed-off-by: NPing-Ke Shih <pkshih@realtek.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>