Lint: Make tab checks portable

Signed-off-by: Brendan Moran <brendan.moran@arm.com>

Author: bremoran

scripts/format

@@ -69,7 +69,7 @@ info "Expanding tabs"
 expand-tabs()
 {
   git ls-files -- ":/" ":/!:Makefile" ":/!:**/Makefile" ":/!:**/Makefile.*" ":/!:Makefile.*" ":/!:*.mk" ":/!:*.patch" ":/!:*.S" ":/!:*.inc" ":/!:nix/valgrind/*.txt" | xargs -P "$nproc" -I {} sh -c '
-    if [ ! -L {} ] && grep -Pq '"'"'\t'"'"' "{}"; then
+    if [ ! -L {} ] && grep -q "$(printf '"'"'\t'"'"')" "{}"; then
       tmp=$(mktemp)
       expand -t 4 "{}" > "$tmp" && mv "$tmp" "{}"
       echo "{}"

scripts/lint

@@ -269,8 +269,8 @@ gh_group_end
 check-tabs()
 {
   for file in $(git ls-files -- ":/" ":/!:Makefile" ":/!:**/Makefile" ":/!:**/Makefile.*" ":/!:Makefile.*" ":/!:*.mk" ":/!:*.patch" ":/!:*.S" ":/!:*.inc" ":/!:nix/valgrind/*.txt"); do
-    if [[ ! -L $file ]] && grep -Pq '\t' "$file"; then
-      l=$(grep -Pn '\t' "$file" | head -1 | cut -d: -f1)
+    if [[ ! -L $file ]] && grep -q $'\t' "$file"; then
+      l=$(grep -n $'\t' "$file" | head -1 | cut -d: -f1)
       echo "$file $l"
     fi
   done

test/zephyr/app/Kconfig

@@ -5,10 +5,10 @@
 # models (and QEMU's mps3-an547) supports it. Force-select the extension so the
 # Armv8.1-M MVE FIPS202 backend can be built. Enabled per target by platform.mk.
 config FIPS202_MVE_BACKEND
-	bool "Build with the Armv8.1-M MVE FIPS202 backend"
-	select FPU
-	select ARMV8_M_DSP
-	select ARMV8_1_M_MVEI
-	select ARMV8_1_M_MVEF
+  bool "Build with the Armv8.1-M MVE FIPS202 backend"
+  select FPU
+  select ARMV8_M_DSP
+  select ARMV8_1_M_MVEI
+  select ARMV8_1_M_MVEF
 
 source "Kconfig.zephyr"