devtools: use libabigail rule for mlx glue drivers

Convert the existing exception in the ABI script into a libabigail
suppression rule.

Note: file_name_regexp could be used to achieve the same with versions of
libabigail < 1.7 but soname_regexp has been preferred here since it is
already used with a recent change on common/mlx5.

While at it, fix indent from a recent change.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>

devtools/check-abi.sh

@@ -37,13 +37,6 @@ fi
 error=
 for dump in $(find $refdir -name "*.dump"); do
 	name=$(basename $dump)
-	# skip glue drivers, example librte_pmd_mlx5_glue.dump
-	# We can't rely on a suppression rule for now:
-	# https://sourceware.org/bugzilla/show_bug.cgi?id=25480
-	if grep -qE "\<soname='[^']*_glue\.so\.[^']*'" $dump; then
-		echo "Skipped glue library $name."
-		continue
-	fi
 	if grep -qE "\<librte_*.*_octeontx2" $dump; then
 		echo "Skipped removed driver $name."
 		continue

devtools/libabigail.abignore

@@ -12,10 +12,14 @@
 [suppress_variable]
         name_regexp = _pmd_info$
 
+; Ignore changes on soname for mlx glue internal drivers
+[suppress_file]
+        soname_regexp = ^librte_.*mlx.*glue\.
+
 ; Ignore fields inserted in place of reserved_opts of rte_security_ipsec_sa_options
 [suppress_type]
-       name = rte_security_ipsec_sa_options
-       has_data_member_inserted_between = {offset_of(reserved_opts), end}
+        name = rte_security_ipsec_sa_options
+        has_data_member_inserted_between = {offset_of(reserved_opts), end}
 
 ; Ignore changes to rte_crypto_asym_op, asymmetric crypto API is experimental
 [suppress_type]