[PATCH -next] staging: hp100: Fix build error without ETHERNET

[YueHaibing]

It should depends on ETHERNET, otherwise building fails:

drivers/staging/hp/hp100.o: In function `hp100_pci_remove':
hp100.c:(.text+0x165): undefined reference to `unregister_netdev'
hp100.c:(.text+0x214): undefined reference to `free_netdev'

Fixes: 52340b82cf1a ("hp100: Move 100BaseVG AnyLAN driver to staging")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 drivers/staging/hp/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/hp/Kconfig b/drivers/staging/hp/Kconfig
index fb395cf..f20ab21 100644
--- a/drivers/staging/hp/Kconfig
+++ b/drivers/staging/hp/Kconfig
@@ -6,6 +6,7 @@
 config NET_VENDOR_HP
 	bool "HP devices"
 	default y
+	depends on ETHERNET
 	depends on ISA || EISA || PCI
 	---help---
 	  If you have a network (Ethernet) card belonging to this class, say Y.
-- 
2.7.4