bootstd: sata: Add bootstd support for ahci sata

Add ahci sata bootdev and corresponding hunting function.

Signed-off-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index 6e30180..0b6f910 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -10,7 +10,7 @@
 obj-$(CONFIG_DWC_AHSATA) += dwc_ahsata.o
 obj-$(CONFIG_FSL_SATA) += fsl_sata.o
 obj-$(CONFIG_LIBATA) += libata.o
-obj-$(CONFIG_SATA) += sata.o
+obj-$(CONFIG_SATA) += sata.o sata_bootdev.o
 obj-$(CONFIG_SATA_CEVA) += sata_ceva.o
 obj-$(CONFIG_SATA_MV) += sata_mv.o
 obj-$(CONFIG_SATA_SIL) += sata_sil.o