cfg: Add check for newly used function in ELL

ELL has a new dependency on rawmemchr() which needs to be accounted for at configure time.

---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

index d6347c098..6f4096c88 100644
@@ -49,6 +49,8 @@ AC_ARG_ENABLE(threads, AC_HELP_STRING([--enable-threads],
 
 AC_CHECK_FUNCS(explicit_bzero)
 
+AC_CHECK_FUNCS(rawmemchr)
+
 AC_CHECK_FUNC(signalfd, dummy=yes,
 			AC_MSG_ERROR(signalfd support is required))
 

2.25.4

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Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list. This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=408835

---Test result---

##############################
Test: CheckPatch - PASS

##############################
Test: CheckGitLint - PASS

##############################
Test: CheckBuild - PASS

##############################
Test: MakeCheck - PASS

---
Regards,
Linux Bluetooth

Applied