broadcom: add include guards to include/linux/brcmphy.h

include/linux/brcmphy.h is currently not protected against double
inclusion, add ifdefs guard to fix that.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/brcmphy.h

+#ifndef _LINUX_BRCMPHY_H
+#define _LINUX_BRCMPHY_H
+
 #define PHY_ID_BCM50610			0x0143bd60
 #define PHY_ID_BCM50610M		0x0143bd70
 #define PHY_ID_BCM5241			0x0143bc30
@@ -29,3 +32,5 @@
 #define PHY_BRCM_CLEAR_RGMII_MODE	0x00004000
 #define PHY_BRCM_DIS_TXCRXC_NOENRGY	0x00008000
 #define PHY_BCM_FLAGS_VALID		0x80000000
+
+#endif /* _LINUX_BRCMPHY_H */