staging: r8188eu: remove rtl8188e_InitializeFirmwareVars()

Merge rtl8188e_InitializeFirmwareVars() into rtl8188eu_hal_init()
and remove rtl8188e_InitializeFirmwareVars().

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220107103620.15648-3-straube.linux@gmail.com


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