system/i2c/i2c_main.c:  fix a backward comparison.  Noted by Jakob Haufe.
@@ -365,7 +365,7 @@ int i2c_main(int argc, char *argv[])
g_i2ctool.addr = CONFIG_I2CTOOL_MINADDR;
}
- if (g_i2ctool.regaddr < CONFIG_I2CTOOL_MAXREGADDR)
+ if (g_i2ctool.regaddr > CONFIG_I2CTOOL_MAXREGADDR)
{
g_i2ctool.regaddr = 0;
}
