staging: rtl8192e: renamed variable HTMcsToDataRate

staging: rtl8192e: renamed variable HTMcsToDataRate

Renamed variable from Pascal/CamelCase to Snake case the variable
HTMcsToDataRate.
HTMcsToDataRate -> ht_mcs_to_data_rate

Linux Kernel coding style (cleanup), checkpatch Avoid CamelCase.
Driver/module rtl8192e compiles.

Signed-off-by: Gary Rookard <garyrookard@fastmail.org>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20231123144337.13112-2-garyrookard@fastmail.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>