[source] imx6: add DSA driver for MV88E6176 switch

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/b2255f36213547e5a8c7d4728635763a75f6f2ce

commit b2255f36213547e5a8c7d4728635763a75f6f2ce
Author: Tim Harvey <tharvey at gateworks.com>
AuthorDate: Fri Mar 10 07:01:26 2017 -0800

    imx6: add DSA driver for MV88E6176 switch
    
    The MV88E6176 switch is present on the GW16083 and the GW5904
    
    As of a5c32a1f1996f4f75504c4a9abd1c99eaa598df1 these drivers are to be
    enabled static in per-target kernels.
    
    Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
 target/linux/imx6/config-4.9 | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/target/linux/imx6/config-4.9 b/target/linux/imx6/config-4.9
index 9aafa50..b4d23de 100644
--- a/target/linux/imx6/config-4.9
+++ b/target/linux/imx6/config-4.9
@@ -352,8 +352,16 @@ CONFIG_MUTEX_SPIN_ON_OWNER=y
 CONFIG_MXS_DMA=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NEON=y
+CONFIG_NET_DSA=y
+# CONFIG_B53 is not set
+CONFIG_NET_DSA_MV88E6XXX=y
+CONFIG_NET_DSA_MV88E6XXX_GLOBAL2=y
+# CONFIG_NET_DSA_QCA8K is not set
+CONFIG_NET_DSA_TAG_DSA=y
+CONFIG_NET_DSA_TAG_EDSA=y
 CONFIG_NET_FLOW_LIMIT=y
 CONFIG_NET_PTP_CLASSIFY=y
+CONFIG_NET_SWITCHDEV=y
 CONFIG_NLS=y
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NO_BOOTMEM=y