This patch adjusts the 'extract_initcall_order' utility to the changed
initcall symbol syntax introduced in Linux by the following commit:
https://github.com/torvalds/linux/commit/a8cccdd9
It uses an additional sed step to strip away the kmod prefix,
__COUNTER__, and __LINE__ information so that the symbol names match
those of earlier kernel versions.
Issue #4188
The new tool `extract_initcall_order` generates a header file out of a
Linux kernel build, which provides a sorted array with the initcall function
names of the kernel build. The order states the order in which the initcall
have to be called. It gets extrated out of the Linux kernel System.map.
Fixes#4172
