common: spl: Add spl sata boot support

Add spl_sata to read a fat partition from a bootable SATA
drive.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
diff --git a/common/spl/Makefile b/common/spl/Makefile
index 65a1484..64569c2 100644
--- a/common/spl/Makefile
+++ b/common/spl/Makefile
@@ -18,4 +18,5 @@
 obj-$(CONFIG_SPL_MMC_SUPPORT) += spl_mmc.o
 obj-$(CONFIG_SPL_USB_SUPPORT) += spl_usb.o
 obj-$(CONFIG_SPL_FAT_SUPPORT) += spl_fat.o
+obj-$(CONFIG_SPL_SATA_SUPPORT) += spl_sata.o
 endif