work around ancient libdrm in el7

chromium-85.0.4183.83-el7-old-libdrm.patch

@@ -0,0 +1,15 @@
+diff -up chromium-85.0.4183.83/ui/gfx/linux/drm_util_linux.cc.el7-old-libdrm chromium-85.0.4183.83/ui/gfx/linux/drm_util_linux.cc
+--- chromium-85.0.4183.83/ui/gfx/linux/drm_util_linux.cc.el7-old-libdrm	2020-08-31 09:38:46.043993882 -0400
++++ chromium-85.0.4183.83/ui/gfx/linux/drm_util_linux.cc	2020-08-31 09:39:21.599906318 -0400
+@@ -6,6 +6,11 @@
+ 
+ #include <drm_fourcc.h>
+ 
++// the libdrm in EL-7 is too old to have this define
++#ifndef DRM_FORMAT_P010
++#define DRM_FORMAT_P010 DRM_FORMAT_INVALID
++#endif
++
+ #include "base/notreached.h"
+ 
+ namespace ui {

chromium.spec

@@ -297,6 +297,9 @@ Patch106:	chromium-77-clang.patch
 # error: incompatible types when initializing type 'int64_t' {aka 'long int'} using type 'int64x1_t'
 # note: expected 'int8x16_t' but argument is of type 'uint8x16_t'
 Patch107:	chromium-84.0.4147.89-el8-arm-incompatible-ints.patch
+# libdrm on EL7 is rather old and chromium assumes newer
+# This gets us by for now
+Patch108:	chromium-85.0.4183.83-el7-old-libdrm.patch
 
 # Enable VAAPI support on Linux
 # NOTE: This patch will never land upstream
@@ -910,6 +913,7 @@ udev.
 # %%patch102 -p1 -b .el7-noexcept
 %patch103 -p1 -b .epel7-kcmp
 %patch104 -p1 -b .el7cups
+%patch108 -p1 -b .el7-old-libdrm
 %endif
 
 %if 0%{?rhel} == 7 || 0%{?rhel} == 8