File std-gnu17.patch of Package powerpc-utils

Patch-mainline: should be fixed in the code (https://github.com/ibm-power-utilities/powerpc-utils/pull/105)

Add '-std=gnu17' to make gcc15 happy.

diff --git a/Makefile.am b/Makefile.am
index fe54de9..d0dc045 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -91,7 +91,7 @@ src_ppc64_cpu_LDADD = -lpthread
 src_vcpustat_SOURCES = src/vcpustat.c $(pseries_platform_SOURCES)
 
 
-AM_CFLAGS = -Wall -g
+AM_CFLAGS = -Wall -g -std=gnu17
 AM_CPPFLAGS = -I $(top_srcdir)/src/common/ -D _GNU_SOURCE
 
 if WITH_LIBRTAS