include/bios_emul.h: Audit include list

This file does not need <pc.h> but does directly need
<linux/types.h>. Furthermore, arch/x86/lib/bios.c was getting <pci.h>
via <bios_emul.h> so add it there.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/bios_emul.h b/include/bios_emul.h
index a7e6d73..47a4529 100644
--- a/include/bios_emul.h
+++ b/include/bios_emul.h
@@ -8,7 +8,7 @@
 
 /* Include the register header directly here */
 #include "../drivers/bios_emulator/include/x86emu/regs.h"
-#include <pci.h>
+#include <linux/types.h>
 
 /****************************************************************************
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