rootfsinstall: fixes for baytrail target

src/rootfsinstall.sh

@@ -163,7 +163,7 @@ case $TARGETDEVICE in
         BOOTFSTYPE=fat16
         BOOTFSSIZE=22M
         BOOTFSSTART=1049k
-        KERNELVER="baytrail"
+        KERNELVER="4.9.17-baytrail"
         KERNELDEST="@BOOT@/vmlinuz-$KERNELVER"
         INSTALLPACKAGES="kernel-baytrail kernel-baytrail-headers \
            chipone_ts grub-efi rtl8723bs_bt rtl8723bs axpd acpi_tables_patch $INSTALLPACKAGES"
@@ -560,8 +560,8 @@ fi
 #
 for c in `seq 1 ${#PRECHROOTCOMMANDS[*]}`; do
    PRECHROOTCOMMAND=`echo ${PRECHROOTCOMMANDS[c-1]} | sed "s|@ROOT@|$ROOTMP|g;s|@BOOT@|$BOOTMP|g"`
-   $PRECHROOTCOMMAND || {
-      echo "ERROR: error running pre-chroot command '${PRECHROOTCOMMANDS[c-1]}'; aborting."
+   eval $PRECHROOTCOMMAND || {
+      echo "ERROR: error running pre-chroot command '${PRECHROOTCOMMAND}'; aborting."
       exit 1
    }
 done