arm926ejs, at91: add common phy_reset function

add common phy reset code into a common function.

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Bo Shen <voice.shen@atmel.com>
Cc: Jens Scharsig <esw@bus-elektronik.de>
Cc: Sergey Lapin <slapin@ossfans.org>
Cc: Stelian Pop <stelian@popies.net>
Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Cc: Eric Benard <eric@eukrea.com>
Cc: Markus Hubig <mhubig@imko.de>
Acked-by: Jens Scharsig (BuS Elektronik) <esw@bus-elektronik.de>
Tested-by: Jens Scharsig (BuS Elektronik) <esw@bus-elektronik.de>
Tested-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/include/configs/stamp9g20.h b/include/configs/stamp9g20.h
index 248e657..51339b1 100644
--- a/include/configs/stamp9g20.h
+++ b/include/configs/stamp9g20.h
@@ -145,6 +145,7 @@
 #ifdef CONFIG_MACB
 # define CONFIG_RMII			/* use reduced MII inteface */
 # define CONFIG_NET_RETRY_COUNT	20      /* # of DHCP/BOOTP retries */
+#define CONFIG_AT91_WANTS_COMMON_PHY
 
 /* BOOTP and DHCP options */
 # define CONFIG_BOOTP_BOOTFILESIZE