Add some missing intrinsic symbols for thumb ISA (#503)

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>

Co-authored-by: Huang Qi <huangqi3@xiaomi.com>

core/iwasm/aot/arch/aot_reloc_thumb.c

@@ -8,6 +8,19 @@
 #define R_ARM_THM_CALL  10  /* PC relative (Thumb BL and ARMv5 Thumb BLX). */
 #define R_ARM_THM_JMP24 30  /* B.W */
 
+void __ltdf2();
+void __adddf3();
+void __eqdf2();
+void __unorddf2();
+void __muldf3();
+void __subdf3();
+void __gedf2();
+void __ledf2();
+void __fixunsdfsi();
+void __floatunsidf();
+void __fixdfsi();
+void __nedf2();
+void __floatsidf();
 void __divdi3();
 void __udivdi3();
 void __moddi3();
@@ -57,6 +70,19 @@ void __aeabi_f2d();
 static SymbolMap target_sym_map[] = {
     REG_COMMON_SYMBOLS
     /* compiler-rt symbols that come from compiler(e.g. gcc) */
+    REG_SYM(__ltdf2),
+    REG_SYM(__adddf3),
+    REG_SYM(__eqdf2),
+    REG_SYM(__unorddf2),
+    REG_SYM(__muldf3),
+    REG_SYM(__subdf3),
+    REG_SYM(__gedf2),
+    REG_SYM(__ledf2),
+    REG_SYM(__fixunsdfsi),
+    REG_SYM(__floatunsidf),
+    REG_SYM(__fixdfsi),
+    REG_SYM(__nedf2),
+    REG_SYM(__floatsidf),
     REG_SYM(__divdi3),
     REG_SYM(__udivdi3),
     REG_SYM(__umoddi3),