Use uname -m instead of uname -i

-i (and -p) just say "unknown", since Fedora 38:
https://bugzilla.redhat.com/show_bug.cgi?id=2203350
-m still seems to do the right thing.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

tests/Regression/bz1172766-ppc64-segv-in-libbfd/runtest.sh

@@ -35,7 +35,7 @@ REQUIRES="${REQUIRES:-kernel-debuginfo}"
 __have_kernel_debuginfo () {
     local RELEASE ARCH TEMPDIR
     rlRun "RELEASE=$(uname -r)"
-    rlRun "ARCH=$(uname -i)"
+    rlRun "ARCH=$(uname -m)"
     if ! rpm -q kernel-debuginfo-$RELEASE &>/dev/null; then
         rlLogInfo 'kernel-debuginfo not present, trying to install it'
         rlRun "TEMPDIR=$(mktemp -d -p $HOME)" # $HOME to avoid "small" tmpfs

tests/Sanity/dts-probe-binaries/runtest.sh

@@ -111,7 +111,7 @@ rlJournalStart
     ./popcnt > a
     rlRun "$ADDR2LINE -e popcnt $(cat a) > r"
     # We know that main is at line 4.  But on PPC we get ??:0...
-if test ! $(uname -i) = "ppc64"; then
+if test ! $(uname -m) = "ppc64"; then
     rlAssertGrep "popcnt.c:4" r
 fi
     rm -vf [ra]
@@ -182,7 +182,7 @@ fi
     rlAssertGrep "__libc_start_main@GLIBC" u
     # Try -P --size-sort.
     rlRun "$NM -P --size-sort localplt > p"
-if test $(uname -i) = "ppc64" -a $(rlGetDistroRelease) -gt 5; then
+if test $(uname -m) = "ppc64" -a $(rlGetDistroRelease) -gt 5; then
     rlAssertGrep "main D" p
 else
     rlAssertGrep "main T" p