sim: Add bfd include path for common testsuite tools

On a host without installed libbfd, this patch fixes the following
"make check-sim" errors for both pru cross target, and native x86_64:

In file included from ../../../binutils/sim/common/sim-basics.h:131,
                 from testsuite/common/bits32m0.c:13:../../../binutils/sim/../include/gdb/callback.h:55:10: fatal error: bfd.h: No such file or directory
   55 | #include "bfd.h"
      |          ^~~~~~~

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>

sim/ChangeLog

@@ -1,3 +1,7 @@
+2021-05-07  Dimitar Dimitrov  <dimitar@dinux.eu>
+
+	* Makefile.in: Rebuild.
+
 2021-05-04  Tom Tromey  <tromey@adacore.com>
 
 	* Makefile.in: Rebuild.

sim/Makefile.in

@@ -731,7 +731,8 @@ LINK_FOR_BUILD = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) -o $@
 EXTRA_DEJAGNU_SITE_CONFIG = site-srcdir.exp
 testsuite_common_CPPFLAGS = \
 	-I$(srcdir)/common \
-	-I$(srcroot)/include
+	-I$(srcroot)/include \
+	-I../bfd
 
 all: all-recursive
 

sim/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+2021-05-07  Dimitar Dimitrov  <dimitar@dinux.eu>
+
+	* local.mk (%C%_CPPFLAGS): Add ../bfd include path.
+
 2021-04-08  Mike Frysinger  <vapier@gentoo.org>
 
 	* lib/sim-defs.exp (run_sim_test): Set status to unsupported if

sim/testsuite/common/local.mk

@@ -29,7 +29,8 @@ check_PROGRAMS += $(TESTS)
 
 %C%_CPPFLAGS = \
 	-I$(srcdir)/common \
-	-I$(srcroot)/include
+	-I$(srcroot)/include \
+	-I../bfd
 
 # These tests are build-time only tools.  Override the default rules for them.
 %D%/%.o: %D%/%.c