hermit: Add net feature

Currently used to enable the loopback driver, in the future required for
any network support at all.

Signed-off-by: Jens Reidel <[email protected]>

Author: Gelbpunkt

hermit/Cargo.toml

@@ -50,6 +50,7 @@ instrument = []
 
 libc = []
 mmap = []
+net = []
 pci = []
 pci-ids = ["pci"]
 

hermit/build.rs

@@ -123,6 +123,7 @@ impl KernelSrc {
 				"idle-poll",
 				"log-target",
 				"mmap",
+				"net",
 				"pci",
 				"pci-ids",
 				"rtl8139",