arm: socfpga: Remove bashisms from qts filter

Weed out bashisms from the script. The echo -e does not work in dash,
which is the default /bin/sh in debian .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dalon Westergreen <dwesterg@gmail.com>

arch/arm/mach-socfpga/qts-filter.sh

@@ -187,13 +187,13 @@ usage() {
 	echo "$0 [soc_type] [input_qts_dir] [input_bsp_dir] [output_dir]"
 	echo "Process QTS-generated headers into U-Boot compatible ones."
 	echo ""
-	echo -e "  soc_type\t-\tType of SoC, either 'cyclone5' or 'arria5'."
-	echo -e "  input_qts_dir\t-\tDirectory with compiled Quartus project"
-	echo -e "\t\t\t\tand containing the Quartus project file (QPF)."
-	echo -e "  input_bsp_dir\t-\tDirectory with generated bsp containing"
-	echo -e "\t\t\t\tthe settings.bsp file."
-	echo -e "  output_dir\t-\tDirectory to store the U-Boot compatible"
-	echo -e "\t\t\t\theaders."
+	echo "  soc_type      - Type of SoC, either 'cyclone5' or 'arria5'."
+	echo "  input_qts_dir - Directory with compiled Quartus project"
+	echo "                  and containing the Quartus project file (QPF)."
+	echo "  input_bsp_dir - Directory with generated bsp containing"
+	echo "                  the settings.bsp file."
+	echo "  output_dir    - Directory to store the U-Boot compatible"
+	echo "                  headers."
 	echo ""
 }