staging: r8188eu: offset is always 0 in iol_read_efuse

The offset parameter of iol_read_efuse is always 0. Remove the
parameter and use 0 in the function body.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-12-martin@kaiser.cx


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