kconfig: Remove unnecessary prototypes from headers

Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --cc scripts/kconfig/confdata.c
Simple merge

diff --cc scripts/kconfig/expr.c
Simple merge

diff --cc scripts/kconfig/expr.h
Simple merge

diff --cc scripts/kconfig/lkc.h
Simple merge

diff --cc scripts/kconfig/lkc_proto.h
Simple merge

diff --cc scripts/kconfig/menu.c
Simple merge

diff --cc scripts/kconfig/symbol.c
Simple merge