kbuild: do not add $(call ...) to invoke cc-version or cc-fullversion

The macros cc-version, cc-fullversion and ld-version take no argument.
It is not necessary to add $(call ...) to invoke them.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Helge Deller <deller@gmx.de> [parisc]
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --cc Documentation/kbuild/makefiles.txt
Simple merge

diff --cc arch/parisc/Makefile
Simple merge

diff --cc arch/powerpc/Makefile
Simple merge

diff --cc arch/x86/Makefile.um
Simple merge

diff --cc kernel/gcov/Makefile
Simple merge

diff --cc scripts/Kbuild.include
Simple merge