linux-5.3.2: Compress kernel with LZ4

This creates slightly smaller images, and decompresses much faster. [1]

    $ ls -l /boot/bzImage-5.3*
    -rw-r--r-- 1 root root 13181488 Sep 23 15:21 /boot/bzImage-5.3.0.mx64.291
    -rw-r--r-- 1 root root 11956784 Oct  2 16:33 /boot/bzImage-5.3.2.mx64.292

[1]: https://kernel.ubuntu.com/~cking/boot-speed-eoan-5.3/kernel-compression-method.txt

linux-5.3.2-292.bee

@@ -62,7 +62,7 @@ mee_configure() {
     # result from 'make savedefconfig'
     cat >config-from-bee-file <<-EOF
 	CONFIG_LOCALVERSION="$KERNELLOCAL"
-	CONFIG_KERNEL_BZIP2=y
+	CONFIG_KERNEL_LZ4=y
 	CONFIG_SYSVIPC=y
 	CONFIG_POSIX_MQUEUE=y
 	CONFIG_AUDIT=y