mb/ibm/sbp1: Disable SATA controller

SATA controller isn't used & hence disable.

Change-Id: Iab2d597e6a0f22b946e657a2851b68f752d1f7d4
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77893
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/ibm/sbp1/devicetree.cb b/src/mainboard/ibm/sbp1/devicetree.cb
index 6fee7b8..2f8b4a4 100644
--- a/src/mainboard/ibm/sbp1/devicetree.cb
+++ b/src/mainboard/ibm/sbp1/devicetree.cb
@@ -4,6 +4,9 @@
 
 	device domain 0 on
 		device pci 16.3 off end # Serial controller: Intel Corporation Device 1be3
+		device pci 17.0 off end # Intel device 1ba2: PCH SATA controller 0 (AHCI)
+		device pci 18.0 off end # Intel device 1bf2: PCH SATA controller 1 (AHCI)
+		device pci 19.0 off end # Intel device 1bd2: PCH SATA controller 2 (AHCI)
 
 		device pci 1f.0 on         # Intel device 1b81: PCH eSPI controller
 			chip drivers/ipmi # BMC KCS