New icon : phone other way

Hello,
I wanted to add it as a feature request but I don’t manage to do it.
It would be great to have by default the phone icon but with the speaking side on the right and not on the left. Each time I have to upload a new icon.

Or is it possible to do it with a transform rotate ?
Here is my code :

.phone::before {
    content: "\e854";
    font-family: entypo-fontello;
    font-size: 15px;
    position: relative;
    right: 5px;
}

And this in the Phone area / top bar:
<span class="phone">02 340 32 40</span> <span class="btn-top"><a href="#">COMMANDE</a></span>

Website access below.
Tx guys !!