Add STAILQ_HEAD() and STAILQ_ENTRY() to typedefs.checkpatch

When using BSD queues from <sys/queues.h>, a singly linked tail queue
entry is declared with a macro:

STAILQ_ENTRY(type) var;

This makes checkpatch.pl unhappy because the type is unknown:

WARNING: Missing a blank line after declarations
+       struct file *file;
+       STAILQ_ENTRY(load_seg) link;

Checkpatch has the same problem with the macro STAILQ_HEAD().

This patch adds a regular expression to typedefs.checkpatch that
matches the macro part, thus fixing the warning.

Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

Author: ldts

typedefs.checkpatch

@@ -30,6 +30,8 @@ TEE_BigIntFMM
 TEE_BigInt
 TEE_Attribute
 TAILQ_ENTRY\(.*\)
+STAILQ_HEAD\(.*\)
+STAILQ_ENTRY\(.*\)
 SLIST_HEAD\(.*\)
 SLIST_ENTRY\(.*\)
 mbedtls_mpi_uint