Some error corrections like logging function instead of echo

Signed-off-by: Thomas Mittelstaedt <thomas.mittelstaedt@de.bosch.com>

tools/mountimage

@@ -3,7 +3,7 @@
 #
 # Copyright (c) 2023 Thomas Mittelstaedt <thomas.mittelstaedt@de.bosch.com>
 
-VERSION=2.1.0
+VERSION=2.1.1
 VERSIONDATE=2023
 
 SHORT=hp:m:vr:ulf
@@ -133,7 +133,7 @@ function print_verbose_line() {
 #   $* : Strings to log
 #######################################
 function print_error_line() {
-  echo "$(basename $0): $*" >&2
+  echo "${PROGNAME}: $*" >&2
 }
 
 
@@ -316,7 +316,7 @@ local found_valid_root_partition
     root_devices=( $(get_root_partitions ${IMAGE_DEVICE} ${IMAGE_DEVICE_P}) )
     size=${#root_devices[@]}
     if [ "$size" -eq "0" ]; then
-      echo "/ is not mounted for $IMAGE_DEVICE, can't handle sub mounts"
+      print_verbose_line "/ is not mounted for $IMAGE_DEVICE, can't handle sub mounts"
       mdevice=''
       mbind=''
     else
@@ -450,7 +450,7 @@ local parsed
               shift
               ;;
           --version)
-              echo "$(basename $0) $VERSION ($VERSIONDATE)"
+              echo "$PROGNAME $VERSION ($VERSIONDATE)"
               shift
               exit 0
               ;;
@@ -656,7 +656,7 @@ local mbind rootmnt
   if test "$labelpath" != "/"; then
     rootmnt=$(check_and_try_to_mount_root_partition $device $devicep)
     if [ -z "${rootmnt}" ];then
-      echo "/ is not mounted for $device, can't handle sub mounts"
+      print_error_line "/ is not mounted for $device, can't handle sub mounts"
       mdevice=''
       mbind=''
     fi