net: via/Kconfig: replace USE_OF with OF_???

USE_OF is used as intermediate Kconfig option by few
arch's (ARM, MIPS, Xtensa).
Replace instances of USE_OF outside of arch folders
with proper OF_???.
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/via/Kconfig

@@ -19,7 +19,7 @@ if NET_VENDOR_VIA
 
 config VIA_RHINE
 	tristate "VIA Rhine support"
-	depends on (PCI || USE_OF)
+	depends on (PCI || OF_IRQ)
 	select CRC32
 	select MII
 	---help---
@@ -43,7 +43,7 @@ config VIA_RHINE_MMIO
 
 config VIA_VELOCITY
 	tristate "VIA Velocity support"
-	depends on (PCI || USE_OF)
+	depends on (PCI || (OF_ADDRESS && OF_IRQ))
 	select CRC32
 	select CRC_CCITT
 	select MII