newlib: link ESP8684 ROM symbols _printf_float & _scanf_float
@@ -40,8 +40,8 @@ vprintf = 0x400006b8;
viprintf = 0x400006bc;
vsnprintf = 0x400006c0;
vsniprintf = 0x400006c4;
-__rom_printf_float = 0x400006c8;
-__rom_scanf_float = 0x400006cc;
+_printf_float = 0x400006c8;
+_scanf_float = 0x400006cc;
_scanf_i = 0x400006d0;
_scanf_chars = 0x400006d4;
sscanf = 0x400006d8;
