grub-efi.bbclass: Fix path in startup.nsh for iso image.

The path in startup.nsh for iso image is corrupted as follows:
fs0:\EFI\BOOT^Hootx64.efi

Using printf will emit correct path which is:
fs0:\EFI\BOOT\bootx64.efi

This happens because of echo command. Switching to printf
like the one used in efi_populate() function.

(From OE-Core rev: 7540b9e68d56e7779b478d2bc09fbbedcf28976b)

Signed-off-by: Pranav Tipnis <pranav.tipnis@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/grub-efi.bbclass b/meta/classes/grub-efi.bbclass
index ae8ee382cd..178d0c8350 100644
--- a/meta/classes/grub-efi.bbclass
+++ b/meta/classes/grub-efi.bbclass
@@ -59,7 +59,7 @@ efi_iso_populate() {
         cp $iso_dir/${EFIDIR}/* ${EFIIMGDIR}${EFIDIR}
         cp $iso_dir/vmlinuz ${EFIIMGDIR}
         EFIPATH=$(echo "${EFIDIR}" | sed 's/\//\\/g')
-        echo "fs0:${EFIPATH}\\${GRUB_IMAGE}" > ${EFIIMGDIR}/startup.nsh
+        printf 'fs0:%s\%s\n' "$EFIPATH" "$GRUB_IMAGE" > ${EFIIMGDIR}/startup.nsh
         if [ -f "$iso_dir/initrd" ] ; then
                 cp $iso_dir/initrd ${EFIIMGDIR}
         fi