wifi: rtw89: 8852a: move DIG tables to rtw8852a.c

wifi: rtw89: 8852a: move DIG tables to rtw8852a.c

Now, most of PHY parameter tables in driver can be loaded via FW elements.
Plan to generate the corresponding FW elements for 8852A PHY tables. Then,
after FW elements work for a enough time, rtw8852a_table.c can be cleaned
up. However, DIG (dynamic initial gain) tables are legacy for 8852A only,
so FW element doesn't support. Their sizes are not very big, so move them
to rtw8852a.c and keep rtw8852a_table.c for PHY tables which are supported
by FW elements.

No logic is changed.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260213061552.29997-6-pkshih@realtek.com