ARC: nsim_hs38: Add support of Virtio NET & BLK

Given now nsim_hs38 configuration is usable on QEMU and in QEMU
we have Virtio working perfectly fine the next logical step
is to add support of supported & known to work net & bkl to this
config.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/board/synopsys/nsim/Kconfig b/board/synopsys/nsim/Kconfig
new file mode 100644
index 0000000..2228703
--- /dev/null
+++ b/board/synopsys/nsim/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_NSIM
+
+config SYS_BOARD
+	default "nsim"
+
+config SYS_VENDOR
+	default "synopsys"
+
+config SYS_CONFIG_NAME
+	default "nsim"
+
+endif