package/daq: fix build with GCC14

The daq package fails to build with GCC14 toolchains:

```
daq_nfq.c: In function 'SetPktHdr':
daq_nfq.c:395:37: error: passing argument 2 of 'nfq_get_payload' from incompatible pointer type [-Wincompatible-pointer-types]
  395 |     int len = nfq_get_payload(nfad, (char**)pkt);
      |                                     ^~~~~~~~~~~
      |                                     |
      |                                     char **
```

The issue can be reproduced with the following config:

```
cat > daq.config <<EOF
BR2_arm=y
BR2_cortex_a7=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
BR2_PACKAGE_DAQ=y
BR2_PACKAGE_LIBDNET=y
BR2_PACKAGE_LIBNETFILTER_QUEUE=y
EOF
```

This patch port a patch taken from openembedded meta-networking [1] and
is tested with test-pkg:

```
$ ./utils/test-pkg -c daq.config -p daq
```

[1] https://layers.openembedded.org/layerindex/recipe/37594/

Fixes: https://autobuild.buildroot.org/results/c69/c69ab134463a18eec65ded836aecf89a5cb4a75c/build-end.log
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/daq/0003-daq-fix-incompatible-pointer-type-error.patch

@@ -0,0 +1,31 @@
+Fix daq incompatible pointer type error when gcc option
+'-Wincompatible-pointer-types is set:
+
+| ../../daq-2.0.7/os-daq-modules/daq_nfq.c: In function 'SetPktHdr':
+| ../../daq-2.0.7/os-daq-modules/daq_nfq.c:394:37: error: passing argument 2
+   of 'nfq_get_payload' from incompatible pointer type [-Wincompatible-pointer-types]
+|   394 |     int len = nfq_get_payload(nfad, (char**)pkt);
+|       |                                     ^~~~~~~~~~~
+|       |                                     |
+|       |                                     char **
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+Upstream: https://git.openembedded.org/meta-openembedded/tree/meta-networking/recipes-connectivity/daq/files/daq-fix-incompatible-pointer-type-error.patch?h=master
+Signed-off-by: Thomas Perale <thomas.perale@mind.be>
+---
+ os-daq-modules/daq_nfq.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/os-daq-modules/daq_nfq.c b/os-daq-modules/daq_nfq.c
+index 4de94b6..a6de2f3 100644
+--- a/os-daq-modules/daq_nfq.c
++++ b/os-daq-modules/daq_nfq.c
+@@ -391,7 +391,7 @@ static inline int SetPktHdr (
+     DAQ_PktHdr_t* hdr,
+     uint8_t** pkt
+ ) {
+-    int len = nfq_get_payload(nfad, (char**)pkt);
++    int len = nfq_get_payload(nfad, (unsigned char**)pkt);
+ 
+     if ( len <= 0 )
+         return -1;