FROMLIST: USB: gadget: f_acm: add support for SuperSpeed Plus

Setup the SuperSpeed Plus descriptors for f_acm.

Bug: 170925797
Signed-off-by: taehyun.cho <taehyun.cho@samsung.com>
Link: https://lore.kernel.org/r/20201126180937.255892-2-gregkh@linuxfoundation.org


Change-Id: I40379059d4426a523912b1514a5e5f7575576807
(cherry picked from commit 00572be28ec474d7953f1b9dd681cc2dd290d9bf)
[willmcvicker: only cherry-picked f_acm portion of original patch]
Signed-off-by: Will McVicker <willmcvicker@google.com>
(cherry picked from commit c0e20d95)
Signed-off-by: Will McVicker <willmcvicker@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>