[WCNCR00145904] perf: Support using only EP4IN to improve USB2 throughput

[Description]
Change to support only using EP4IN without EP5IN to improve USB2
throughput (mainly RX).

Change-Id: I7840980aebcf23a24901af8d1b38108a2a70e9f8
Feature: perf
Signed-off-by: Desmond Lin <desmond.lin@mediatek.com>
CR-Id: WCNCR00145904
5 files changed