Make list of linker symbols common

That way the definitions of the assembler and the linker are always the
same.

Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>

include/linkdefs.h

@@ -0,0 +1,62 @@
+#ifndef RGBDS_LINKDEFS_H
+#define RGBDS_LINKDEFS_H
+
+enum eRpnData {
+	RPN_ADD = 0,
+	RPN_SUB,
+	RPN_MUL,
+	RPN_DIV,
+	RPN_MOD,
+	RPN_UNSUB,
+
+	RPN_OR,
+	RPN_AND,
+	RPN_XOR,
+	RPN_UNNOT,
+
+	RPN_LOGAND,
+	RPN_LOGOR,
+	RPN_LOGUNNOT,
+
+	RPN_LOGEQ,
+	RPN_LOGNE,
+	RPN_LOGGT,
+	RPN_LOGLT,
+	RPN_LOGGE,
+	RPN_LOGLE,
+
+	RPN_SHL,
+	RPN_SHR,
+
+	RPN_BANK,
+
+	RPN_HRAM,
+
+	RPN_CONST = 0x80,
+	RPN_SYM = 0x81
+};
+
+enum eSectionType {
+	SECT_WRAM0 = 0,
+	SECT_VRAM,
+	SECT_ROMX,
+	SECT_ROM0,
+	SECT_HRAM,
+	SECT_WRAMX,
+	SECT_SRAM,
+	SECT_OAM
+};
+
+enum eSymbolType {
+	SYM_LOCAL = 0,
+	SYM_IMPORT,
+	SYM_EXPORT
+};
+
+enum ePatchType {
+	PATCH_BYTE = 0,
+	PATCH_WORD_L,
+	PATCH_LONG_L
+};
+
+#endif /* RGBDS_LINKDEFS_H */