sys-apps/drm_info: Apply patch for drm_fourcc.h issue

Signed-off-by: Haelwenn (lanodan) Monnier <contact@hacktivis.me>

sys-apps/drm_info/drm_info-2.2.0.ebuild

@@ -19,6 +19,10 @@ HOMEPAGE="https://github.com/ascent12/drm_info"
 LICENSE="MIT"
 SLOT="0"
 
+PATCHES=(
+	"${FILESDIR}/${P}-drm_fourcc-fix.patch"
+)
+
 DEPEND="
 	x11-libs/libdrm
 	dev-libs/json-c:=

sys-apps/drm_info/files/drm_info-2.2.0-drm_fourcc-fix.patch

@@ -0,0 +1,29 @@
+From 42dad741607d8889f93b2a12725af362c09732a2 Mon Sep 17 00:00:00 2001
+From: Simon Ser <contact@emersion.fr>
+Date: Sun, 10 Jan 2021 12:24:04 +0100
+Subject: [PATCH] Match #define when extracting DRM modifiers
+
+Newer drm_fourcc.h headers have comments which refer to
+DRM_FORMAT_MOD_*. These were matched by the regex.
+
+Fix the regex by requiring a "#define" prefix. I checked that only the
+duplicate values were removed using diff.
+---
+ fourcc.py | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/fourcc.py b/fourcc.py
+index 23f7be6..ebee1d9 100755
+--- a/fourcc.py
++++ b/fourcc.py
+@@ -22,8 +22,8 @@ def afbc_print(f, l):
+ 
+ info = {
+ 	'fmt': r'^#define (\w+)\s*(?:\\$\s*)?fourcc_code',
+-	'basic_pre': r'\bI915_FORMAT_MOD_\w+\b',
+-	'basic_post': r'\b(DRM_FORMAT_MOD_(?:INVALID|LINEAR|SAMSUNG|QCOM|VIVANTE|NVIDIA|BROADCOM|ALLWINNER)\w*)\s',
++	'basic_pre': r'^#define (I915_FORMAT_MOD_\w+)\b',
++	'basic_post': r'^#define (DRM_FORMAT_MOD_(?:INVALID|LINEAR|SAMSUNG|QCOM|VIVANTE|NVIDIA|BROADCOM|ALLWINNER)\w*)\s',
+ 	'afbc_block': r'\bAFBC_FORMAT_MOD_BLOCK_SIZE(?:_\d+x\d+)+\b',
+ 	'afbc_bitmask': r'\bAFBC_FORMAT_MOD_[A-Z]+\b',
+ }