staging: r8188eu: avoid camel case in phy_CalculateBitShift()

Rename the function phy_CalculateBitShift() and its parameter BitMask
to avoid camel case.

phy_CalculateBitShift -> phy_calculate_bit_shift
BitMask -> bitmask

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220806060929.11022-3-straube.linux@gmail.com


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