Some ISO C fixes

This patch just fixes a limited number of bits not conforming to c99 by using
 - __asm__ instead of just asm
 - {0} instead of {} for struct initialization
 - h_addr_list[0] instead of h_addr to access the host address in
   struct hostent
 - #include <strings.h> where needed (for ffs and strcasecmp)

Based on a previous patch by Carl-Daniel.

Corresponding to flashrom svn r1585.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/it87spi.c b/it87spi.c
index fb2f794..a35ddc0 100644
--- a/it87spi.c
+++ b/it87spi.c
@@ -74,7 +74,7 @@
 
 void probe_superio_ite(void)
 {
-	struct superio s = {};
+	struct superio s = {0};
 	uint16_t ite_ports[] = {ITE_SUPERIO_PORT1, ITE_SUPERIO_PORT2, 0};
 	uint16_t *i = ite_ports;