xsrc/56175: xf86-video-nv fails to build with clang

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>Number:         56175
>Category:       xsrc
>Synopsis:       xf86-video-nv fails to build with clang
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    xsrc-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 15 08:05:00 +0000 2021
>Originator:     Miko
>Release:        trunk
>Organization:
>Environment:
Linux zenorus 5.12.4-1-uwu #1 SMP PREEMPT Fri, 14 May 2021 12:29:03 +0000 x86_64 GNU/Linux
>Description:
xf86-video-nv fails to build with clang due to nv_setup.c passing a Uchar to a char.
>How-To-Repeat:
Build a release using build.sh with -x and with llvm enabled.
>Fix:
diff --git a/external/mit/xf86-video-nv/dist/src/nv_setup.c b/external/mit/xf86-video-nv/dist/src/nv_setup.c
index 1a116508d..0bd88ca37 100644
--- a/external/mit/xf86-video-nv/dist/src/nv_setup.c
+++ b/external/mit/xf86-video-nv/dist/src/nv_setup.c
@@ -255,7 +255,7 @@ NVProbeDDC (ScrnInfoPtr pScrn, int bus)
        if (ioctl(xf86Info.consoleFd, WSDISPLAYIO_GET_EDID, &ei) != -1) {
            xf86Msg(X_INFO, "got %d bytes worth of EDID from wsdisplay\n",
                ei.data_size);
-           tmp = xf86InterpretEEDID(pScrn->scrnIndex, buffer);
+           tmp = xf86InterpretEEDID(pScrn->scrnIndex, (Uchar *)buffer);
            tmp->flags |= MONITOR_EDID_COMPLETE_RAWDATA;
            MonInfo = tmp;
        }