dhcp: add FAST_FUNC as appropriate. -160 bytes.

diff --git a/networking/udhcp/script.c b/networking/udhcp/script.c
index 4f4bc25..2324ea9 100644
--- a/networking/udhcp/script.c
+++ b/networking/udhcp/script.c
@@ -209,7 +209,7 @@
 
 
 /* Call a script with a par file and env vars */
-void udhcp_run_script(struct dhcpMessage *packet, const char *name)
+void FAST_FUNC udhcp_run_script(struct dhcpMessage *packet, const char *name)
 {
 	int pid;
 	char **envp, **curr;