linux-imx-headers: make uapi ipu.h, pxp_dma.h compatible with c23 standard

In C23 bool, false and true are reserved keywords.
Make ipu.h, pxp_dma.h uapi include file compatible with C23 standard.

The ipu.h header is i.e. used in the imx-gst1.0-plugin code.
If building with GCC 15 the build fails.

FAILED: libs/libgstfsl-1.0.so.0.0.0.p/v4l2_core_gstimxv4l2.c.o
...imx-gst1.0-plugin/4.9.2+git/recipe-sysroot/usr/include/imx/linux/ipu.h:32:23: error: 'bool' cannot be defined via 'typedef'
   32 | typedef unsigned char bool;

That pxp_dma.h is affected was found with grep. A configuration which
actually includes the file is yet to be found.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>

2 files changed, 58 insertions, 1 deletions

diff --git a/recipes-kernel/linux/linux-imx-headers/0001-video-fbdev-mxc-make-uapi-ipu.h-pxp_dma.h-compatible.patch b/recipes-kernel/linux/linux-imx-headers/0001-video-fbdev-mxc-make-uapi-ipu.h-pxp_dma.h-compatible.patch
new file mode 100644
index 00000000..1750d624
--- /dev/null
+++ b/recipes-kernel/linux/linux-imx-headers/0001-video-fbdev-mxc-make-uapi-ipu.h-pxp_dma.h-compatible.patch
@@ -0,0 +1,54 @@
+From a5bcb18b42cfc0485397da9f48be6a73de86dfac Mon Sep 17 00:00:00 2001
+From: Max Krummenacher <max.krummenacher@toradex.com>
+Date: Sat, 10 May 2025 14:21:35 +0200
+Subject: [PATCH] video: fbdev: mxc: make uapi ipu.h, pxp_dma.h compatible with
+ c23 standard
+
+In C23 standard bool, false, true are reserved keywords.
+Make ipu.h, pxp_dma.h uapi include file compatible with C23 standard.
+
+Upstream-Status: Pending
+Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
+---
+ include/uapi/linux/ipu.h     | 4 ++++
+ include/uapi/linux/pxp_dma.h | 4 ++++
+ 2 files changed, 8 insertions(+)
+
+diff --git a/include/uapi/linux/ipu.h b/include/uapi/linux/ipu.h
+index c92f292bcc9d..a7b60730bbd4 100644
+--- a/include/uapi/linux/ipu.h
++++ b/include/uapi/linux/ipu.h
+@@ -29,9 +29,13 @@
+ #include <linux/videodev2.h>
+ 
+ #ifndef __KERNEL__
++#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L
++/* bool, true and false are keywords.  */
++#else
+ #ifndef __cplusplus
+ typedef unsigned char bool;
+ #endif
++#endif
+ #define irqreturn_t int
+ #define dma_addr_t int
+ #define uint32_t unsigned int
+diff --git a/include/uapi/linux/pxp_dma.h b/include/uapi/linux/pxp_dma.h
+index 9b5228504095..e2deff07516d 100644
+--- a/include/uapi/linux/pxp_dma.h
++++ b/include/uapi/linux/pxp_dma.h
+@@ -25,8 +25,12 @@
+ 
+ #ifndef __KERNEL__
+ typedef unsigned long dma_addr_t;
++#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L
++/* bool, true and false are keywords.  */
++#else
+ typedef unsigned char bool;
+ #endif
++#endif
+ 
+ /*  PXP Pixel format definitions */
+ /*  Four-character-code (FOURCC) */
+-- 
+2.42.0
+
diff --git a/recipes-kernel/linux/linux-imx-headers_6.6.bb b/recipes-kernel/linux/linux-imx-headers_6.6.bb
index dbf4442c..41c337c4 100644
--- a/recipes-kernel/linux/linux-imx-headers_6.6.bb
+++ b/recipes-kernel/linux/linux-imx-headers_6.6.bb
@@ -7,7 +7,10 @@ New headers are installed in ${includedir}/imx."
 LICENSE = "GPL-2.0-only"
 LIC_FILES_CHKSUM = "file://COPYING;md5=6bc538ed5bd9a7fc9398086aedcd7e46"
 
-SRC_URI = "git://github.com/nxp-imx/linux-imx.git;protocol=https;branch=${SRCBRANCH}"
+SRC_URI = " \
+    git://github.com/nxp-imx/linux-imx.git;protocol=https;branch=${SRCBRANCH} \
+    file://0001-video-fbdev-mxc-make-uapi-ipu.h-pxp_dma.h-compatible.patch \
+"
 SRCBRANCH = "lf-6.6.y"
 LOCALVERSION = "-6.6.52-2.2.0"
 SRCREV = "e0f9e2afd4cff3f02d71891244b4aa5899dfc786"