[PATCH] net: e1000: add HAS_DMA dependency

[Antony Pavlov]

The e1000 driver uses the dma coherent functions
and thus can only be build for architectures implementing them.

Here is mips malta build error log:

  drivers/built-in.o: In function `e1000_transmit':
  drivers/net/e1000.c:(.text.e1000_transmit+0x80): undefined reference to
  `dma_sync_single_for_device'
  drivers/built-in.o: In function `e1000_poll':
  drivers/net/e1000.c:(.text.e1000_poll+0x60): undefined reference to
  `dma_sync_single_for_cpu'

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 drivers/net/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 41f033f..b723a12 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -79,6 +79,7 @@ config DRIVER_NET_DM9K
 config DRIVER_NET_E1000
 	bool "Intel e1000 ethernet driver"
 	depends on PCI
+	depends on HAS_DMA
 	select PHYLIB
 	help
 	  This is a driver for the Gigabit Ethernet PCI network cards based on
-- 
2.1.4