stmmac: Move the STMicroelectronics driver

Move the STMicroelectronics driver into driver/net/ethernet/stmicro/ and
make the necessary Kconfig and Makefile changes.

CC: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index c789b6f..5dffc8e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2029,7 +2029,7 @@
 L:	netdev@vger.kernel.org
 W:	http://www.stlinux.com
 S:	Supported
-F:	drivers/net/stmmac/
+F:	drivers/net/ethernet/stmicro/stmmac/
 
 CYBERPRO FB DRIVER
 M:	Russell King <linux@arm.linux.org.uk>