Fix warning in satasii.c when compiling with gcc 4.4.0

Corresponding to flashrom svn r558.
Signed-off-by: Urja Rannikko <urjaman@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>

satasii.c

@@ -64,7 +64,7 @@ int satasii_init(void)
 	sii_bar = physmap("SATA SIL registers", addr, 0x100) + reg_offset;
 
 	/* Check if ROM cycle are OK. */
-	if ((id != 0x0680) && (!(mmio_readl(sii_bar)) & (1 << 26)))
+	if ((id != 0x0680) && (!(mmio_readl(sii_bar) & (1 << 26))))
 		printf("Warning: Flash seems unconnected.\n");
 
 	return 0;