PCI: add AHCI T3 and subclass values

include/arch/i386/pci.h

@@ -123,6 +123,7 @@ Created:	Jan 2000 by Philip Homburg <philip@cs.vu.nl>
 /* Device type values as ([PCI_BCR] << 16) | ([PCI_SCR] << 8) | [PCI_PIFR] */
 #define PCI_T3_VGA_OLD		0x000100	/* OLD VGA class code */
 #define	PCI_T3_RAID		0x010400	/* RAID controller */
+#define PCI_T3_AHCI		0x010601	/* AHCI controller */
 #define PCI_T3_VGA		0x030000	/* VGA-compatible video card */
 #define PCI_T3_ISA		0x060100	/* ISA bridge */
 #define	PCI_T3_PCI2PCI		0x060400	/* PCI-to-PCI Bridge device */