[U-Boot] [PATCH v2 0/3] improve build for UNIX like non GNU platforms

Changes for v2: - updated mkconfig patch to make minimal changes and changed commit message, since it now relies on GNU and BSD extensions.

Jeroen Hofstee (3): include/compiler.h: typedef ulong for FreeBSD rules.mk: replace GNU specific \w with POSIX equivalant mkconfig: also create CONFIG defines with BSD sed