pci.h: Add missing <linux/types.h>

This file has many "Linux" style types in it, add <linux/types.h>

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/pci.h b/include/pci.h
index aad2337..ea3b739 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -520,6 +520,7 @@
 
 #ifndef __ASSEMBLY__
 
+#include <linux/types.h>
 #include <dm/pci.h>
 
 #ifdef CONFIG_SYS_PCI_64BIT