UPSTREAM: linux-firmware: rockchip: update dptx firmware to v3.1

This version firmware resolved HBR2 Compliance Test failed, and improved
compatibility by adjusting the phy configuration. Improved stability of
HDCP.

BUG=chrome-os-partner:55030, chrome-os-partner:56523
TEST=check the DP display

Change-Id: I2eb1733429f20e1baceb69f59cf8f971b4d2809f
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Kyle McMartin <kyle@kernel.org>
Reviewed-on: https://chromium-review.googlesource.com/413163
Reviewed-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit ff1eca22b079ffb47625adae669ccc16926b37b0)
Reviewed-on: https://chromium-review.googlesource.com/422788
Tested-by: Jongpil Jung <jongpil19.jung@samsung.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Commit-Queue: Guenter Roeck <groeck@chromium.org>
diff --git a/rockchip/dptx.bin b/rockchip/dptx.bin
index b466118..c22653a 100644
--- a/rockchip/dptx.bin
+++ b/rockchip/dptx.bin
Binary files differ