staging: rtl8188eu: remove struct eeprom_priv's EepromOrEfuse

This setting is used only in one place. There's no need to store it
in a global struct.

While at it, merge the two-line Hal_InitPGData88E function and its
only caller.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210718173610.894-5-martin@kaiser.cx


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