[PATCH] net: broadcom CNIC: requires MMU

[Randy Dunlap]

The CNIC kconfig symbol selects UIO and UIO depends on MMU.
Since 'select' does not follow dependency chains, add the same MMU
dependency to CNIC.

Quietens this kconfig warning:

WARNING: unmet direct dependencies detected for UIO
  Depends on [n]: MMU [=n]
  Selected by [m]:
  - CNIC [=m] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_BROADCOM [=y] && PCI [=y] && (IPV6 [=m] || IPV6 [=m]=n)

Fixes: adfc5217e9db ("broadcom: Move the Broadcom drivers")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
Cc: Rasesh Mody <rmody@xxxxxxxxxxx>
Cc: GR-Linux-NIC-Dev@xxxxxxxxxxx
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
---
This isn't really the correct Fixes: tag, but I don't know how to go
backwards in git history to find it. :(

 drivers/net/ethernet/broadcom/Kconfig |    1 +
 1 file changed, 1 insertions(+)

--- linux-next-20201125.orig/drivers/net/ethernet/broadcom/Kconfig
+++ linux-next-20201125/drivers/net/ethernet/broadcom/Kconfig
@@ -88,6 +88,7 @@ config BNX2
 config CNIC
 	tristate "QLogic CNIC support"
 	depends on PCI && (IPV6 || IPV6=n)
+	depends on MMU
 	select BNX2
 	select UIO
 	help