staging: r8188eu: _offset is always 0 in efuse_phymap_to_logical

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

We can now replace the bytewise copy from efuseTbl to pbuf with memcpy.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-13-martin@kaiser.cx


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