[source] armvirt: enable the USB feature flag

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/0d44f0cbbccd2720386de4d983853d35cdb3cf30

commit 0d44f0cbbccd2720386de4d983853d35cdb3cf30
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Fri Jan 13 09:15:03 2017 +0100

    armvirt: enable the USB feature flag
    
    USB devices can be passed through from the host to the guest
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 target/linux/armvirt/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/armvirt/Makefile b/target/linux/armvirt/Makefile
index b91e932..3fedcad 100644
--- a/target/linux/armvirt/Makefile
+++ b/target/linux/armvirt/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 ARCH:=arm
 BOARD:=armvirt
 BOARDNAME:=QEMU ARM Virtual Machine
-FEATURES:=fpu pci rtc
+FEATURES:=fpu pci rtc usb
 FEATURES+=cpiogz ext4 ramdisk squashfs targz
 CPU_TYPE:=cortex-a15
 CPU_SUBTYPE:=neon-vfpv4