Solution for "'multiple definition of yylloc' error

fix for
usr/bin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x10): multiple definition of 'yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x0): first defined here
collect2: error: ld returned 1 exit status

see BPI-SINOVOIP/BPI-M4-bsp#4 (comment)

edit the file ./linux-rtk/scripts/dtc/dtc-lexer-lex.c_shipped
Find the line 'YYLTYPE yylloc' and change it to 'extern YYLTYPE yylloc'

scripts/dtc/dtc-lexer.lex.c_shipped

@@ -640,7 +640,7 @@ char *yytext;
 #include "srcpos.h"
 #include "dtc-parser.tab.h"
 
-YYLTYPE yylloc;
+extern YYLTYPE yylloc;
 extern bool treesource_error;
 
 /* CAUTION: this will stop working if we ever use yyless() or yyunput() */