kconfig: Sync with upstream v4.16

This commit introduces the following upstream changes:

5ae6fcc4bb82 kconfig: fix line number in recursive inclusion error message
1a90ce36c6ef kconfig: Update ncurses package names for menuconfig
bf0bbdcf1003 kconfig: Don't leak choice names during parsing
f4bc1eefc160 kconfig: set SYMBOL_AUTO to the symbol marked with defconfig_list
cd81fc82b93f kconfig: add xstrdup() helper
523ca58b7db2 kconfig: remove const qualifier from sym_expand_string_value()
d717f24d8c68 kconfig: add xrealloc() helper
9e3e10c72536 kconfig: send error messages to stderr
f3ff6fb5db68 kconfig: echo stdin to stdout if either is redirected
d2a04648a5db kconfig: remove check_stdin()
cd58a91def2a kconfig: remove 'config*' pattern from .gitignnore
4f208f392103 kconfig: show '?' prompt even if no help text is available
cb67ab2cd2b8 kconfig: do not write choice values when their dependency becomes n
1b9eda2e4892 kconfig: Warn if help text is blank
cedd55d49dee kconfig: Remove silentoldconfig from help and docs; fix kconfig/conf's help
1ccb27143360 kconfig: make "Selected by:" and "Implied by:" readable
312ee68752fa kconfig: announce removal of oldnoconfig if used
d0fd0428ecf0 kconfig: fix make xconfig when gettext is missing
b53688014e33 kconfig: Clarify menu and 'if' dependency propagation
9d1a9e8bc18b kconfig: Document 'if' flattening logic
d3465af60f44 kconfig: Clarify choice dependency propagation
3e41ba05b6d6 kconfig: Document SYMBOL_OPTIONAL logic
765f4cdef6f8 kconfig: use default 'yy' prefix for lexer and parser
84dd95d4f87a kconfig: make conf_unsaved a local variable of conf_read()
5a3dc717b3c7 kconfig: make xfgets() really static
52e58a3caeba kconfig: make input_mode static
6479f327dea6 kconfig: Warn if there is more than one help text
b92d804a5179 kconfig: drop 'boolean' keyword
df60f4b92d3d kconfig: Remove menu_end_entry()
0735f7e5def2 kconfig: Document important expression functions
05cccce58045 kconfig: Document automatic submenu creation code
7cf33f88e294 kconfig: Fix choice symbol expression leak
5b1374b3b3c2 kconfig: Fix expr_free() E_NOT leak
ae7440ef0c80 kconfig: Fix automatic menu creation mem leak
0724a7c32a54 kconfig: Don't leak main menus during parsing
bc28fe1d5ede kconfig: Don't leak 'option' arguments during parsing
24161a6711c9 kconfig: Don't leak 'source' filenames during parsing
26e47a3c11a2 kconfig: Don't leak symbol names during parsing
29c833061c1d kconfig: generate lexer and parser during build instead of shipping
e3b03bf29d6b kconfig: display recursive dependency resolution hint just once
f77850d3fe0c kconfig: Clean up modules handling and fix crash
fa8cedaef814 kconfig: Clarify expression rewriting
9a826842ff2f kconfig: Rename menu_check_dep() to rewrite_m()
c873443430eb kconfig: Sync zconf.y with zconf.tab.c_shipped
52aede4ba5ef kconfig: Document the 'symbol' struct
33ca1a248663 kconfig: Document the 'menu' struct
2c37e08464a8 kconfig: Warn if choice default is not in choice

Signed-off-by: Chris Packham <judge.packham@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/kconfig/lkc_proto.h b/kconfig/lkc_proto.h
index 5d86e2df..9dc8abfb 100644
--- a/kconfig/lkc_proto.h
+++ b/kconfig/lkc_proto.h
@@ -31,7 +31,7 @@ extern struct symbol * symbol_hash[SYMBOL_HASHSIZE];
 
 struct symbol * sym_lookup(const char *name, int flags);
 struct symbol * sym_find(const char *name);
-const char * sym_expand_string_value(const char *in);
+char *sym_expand_string_value(const char *in);
 const char * sym_escape_string_value(const char *in);
 struct symbol ** sym_re_search(const char *pattern);
 const char * sym_type_name(enum symbol_type type);