v4l-utils: Remove unneeded musl patch

The musl issue that 0004-Do-not-use-getsubopt.patch fixes has already
been addressed by the following v4l-utils upstream commit:

commit 6e19bb895a16a9a247524ac526ab47f576cc36f6
Author: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Date:   Thu Nov 25 10:59:22 2021 +0100

    v4l-utils: use v4l_getsubopt instead of getsubopt

    Android doesn't have getsubopt at all, and some libc implementations
    use a getsubopt variant that behaves slightly different.

    So add a new v4l-getsubopt.h header that either just uses the glibc
    function (if glibc is detected) or uses a static inline v4l_getsubopt
    that is copied from glibc. This should avoid such problems.

    Reported-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
    Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Remove the unneeded patch.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-multimedia/v4l2apps/v4l-utils/0004-Do-not-use-getsubopt.patch

@@ -1,60 +0,0 @@
-From 6e7e52de7afe29597016952a7317faf9c3ea3268 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Sat, 30 Nov 2019 18:50:34 -0800
-Subject: [PATCH] Do not use getsubopt
-
-POSIX says that behavior when subopts list is empty is undefined.
-musl libs will set value to NULL which leads to crash.
-
-Simply avoid getsubopt, since we cannot rely on it.
-
-Imported from Alpine Linux
-
-Upstream-Status: Pending
-
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
-
-Adapt patch to 1.23.0.
-
-(v4l-utils rev fd544473800d02e90bc289434cc44e5aa8fadd0f).
-
-%% original patch: 0007-Do-not-use-getsubopt.patch
-
-Signed-off-by: Daniel Gomez <daniel@qtec.com>
----
- utils/v4l2-ctl/v4l2-ctl-common.cpp | 18 ++++++++++--------
- 1 file changed, 10 insertions(+), 8 deletions(-)
-
-diff --git a/utils/v4l2-ctl/v4l2-ctl-common.cpp b/utils/v4l2-ctl/v4l2-ctl-common.cpp
-index d77f7104..838c297d 100644
---- a/utils/v4l2-ctl/v4l2-ctl-common.cpp
-+++ b/utils/v4l2-ctl/v4l2-ctl-common.cpp
-@@ -994,15 +994,17 @@ static bool parse_subset(char *optarg)
- 
- static bool parse_next_subopt(char **subs, char **value)
- {
--	static char *const subopts[] = {
--	    nullptr
--	};
--	int opt = v4l_getsubopt(subs, subopts, value);
-+	char *p = *subs;
-+	*value = *subs;
- 
--	if (opt < 0 || *value)
--		return false;
--	fprintf(stderr, "Missing suboption value\n");
--	return true;
-+	while (*p && *p != ',')
-+		p++;
-+
-+	if (*p)
-+		*p++ = '\0';
-+
-+	*subs = p;
-+	return false;
- }
- 
- void common_cmd(const std::string &media_bus_info, int ch, char *optarg)
--- 
-2.35.1
-

meta-oe/recipes-multimedia/v4l2apps/v4l-utils_1.26.1.bb

@@ -28,7 +28,6 @@ PACKAGECONFIG[v4l2-tracer] = ",-Dv4l2-tracer=disabled,json-c"
 SRC_URI = "\
     git://git.linuxtv.org/v4l-utils.git;protocol=https;branch=stable-1.26 \
     file://0001-keytable-meson-Restrict-the-installation-of-50-rc_ke.patch \
-    file://0004-Do-not-use-getsubopt.patch \
 "
 
 SRCREV = "4aee01a027923cab1e40969f56f8ba58d3e6c0d1"