staging: r8188eu: remove ODM_GetRFReg()

ODM_GetRFReg() is just a wrapper around rtl8188e_PHY_QueryRFReg().
Remove ODM_GetRFReg() and call rtl8188e_PHY_QueryRFReg() directly.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20211229205108.26373-4-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>