wifi: rtw89: 8852a: correct field mask of reset DAC/ADC FIFO

wifi: rtw89: 8852a: correct field mask of reset DAC/ADC FIFO

The field mask should be bits 16-31, but suddenly use wrong bits 24-31,
rarely causing a little performance degraded if DAC/DAC FIFO stays on
an unexpected state.

Found this by Geert who works on bit field functions.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/linux-wireless/CAMuHMdVt+5yOA6tuasX4KQgZud5wtRwu0A15UkEfQJbcd_xvVw@mail.gmail.com/
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251120031044.12493-2-pkshih@realtek.com