abiType: support pointer

cl/_testrt/any/in.go

@@ -4,10 +4,14 @@ import (
 	"github.com/goplus/llgo/internal/runtime/c"
 )
 
+func hi(a any) *c.Char {
+	return a.(*c.Char)
+}
+
 func incVal(a any) int {
 	return a.(int) + 1
 }
 
 func main() {
-	c.Printf(c.Str("Hello %d\n"), incVal(100))
+	c.Printf(c.Str("%s %d\n"), hi(c.Str("Hello")), incVal(100))
 }