update partition creation

it's no longer needed to have the DATA vfat partition at the beginning of the
device, so update the partition creation to put it at the end so it's easier to
resize it (especially when using the iso provided on the releases page)

tools/create-chipsec.sh

@@ -110,33 +110,31 @@ exit_if_no () {
 part_disk () {
 	local disk=${1}
 
-	parted "${1}" --script --align optimal \
-		mklabel gpt \
-		mkpart data fat32 1MiB 100MiB \
-		mkpart esp  fat32 100MiB 200MiB \
-		set 2 boot on \
-		set 2 esp on \
-		mkpart chipsec ext4 200MiB 100%
+	sfdisk -q "${disk}" << EOF
+label: gpt
+size=100MiB,type=uefi,name=esp,bootable
+size=1.6GiB,type=linux,name=chipsec
+type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7,name=data
+EOF
+
+	partprobe "${disk}"
 }
 
 format_boot () {
 	local boot=${1}
 
-	sleep 1
 	mkfs.vfat -n ESP ${boot}
 }
 
 format_data() {
 	local data=${1}
 
-	sleep 1
 	mkfs.vfat -n DATA ${data}
 }
 
 format_root () {
 	local root=${1}
 
-	sleep 1
 	mkfs.ext4 -F ${root}
 }
 
@@ -289,9 +287,9 @@ main () {
 
 	part_disk "${disk}"
 
-	data="${disk}${sep}1"
-	boot="${disk}${sep}2"
-	root="${disk}${sep}3"
+	boot="${disk}${sep}1"
+	root="${disk}${sep}2"
+	data="${disk}${sep}3"
 
 
 	echo "Using ${root} as root partition"