hikey: flash-all.sh: Update flash-all script to use boot.img, since its the new default

Since the build now produces just a boot.img by default, update
the flash-all.sh script to flash that instead of the boot_fat.uefi.img

Change-Id: Iad9ba135021132cc96c50243ef4ad1f0e0b5ffc9
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/installer/flash-all.sh b/installer/flash-all.sh
index 076b580..0d71b45 100755
--- a/installer/flash-all.sh
+++ b/installer/flash-all.sh
@@ -49,7 +49,7 @@
 fastboot flash ptable ${INSTALLER_DIR}/${PTABLE}
 fastboot flash fastboot ${INSTALLER_DIR}/fip.bin
 fastboot flash nvme ${INSTALLER_DIR}/nvme.img
-fastboot flash boot ${OUT_IMGDIR}/boot_fat.uefi.img
+fastboot flash boot ${OUT_IMGDIR}/boot.img
 fastboot flash system ${OUT_IMGDIR}/system.img
 fastboot flash cache ${OUT_IMGDIR}/cache.img
 fastboot flash userdata ${OUT_IMGDIR}/userdata.img