CREDITS: Add Synopsys DesignWare eDMA driver for Gustavo Pimentel

Add the Synopsys DesignWare eDMA driver to CREDITS for Gustavo.  See
7e4b8a4f ("dmaengine: Add Synopsys eDMA IP version 0 support").
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

CREDITS

@@ -3149,6 +3149,7 @@ S: Germany
 N: Gustavo Pimentel
 E: gustavo.pimentel@synopsys.com
 D: PCI driver for Synopsys DesignWare
+D: Synopsys DesignWare eDMA driver
 D: Synopsys DesignWare xData traffic generator
 
 N: Emanuel Pirker