vc/amd/phoenix/platform_descriptor: clarify link_compliance_mode comment

When set to 1, the link_compliance_mode element of the DXIO port
descriptor will cause the corresponding PCIe port to not be trained but
to output a compliance testing pattern instead. Update the comment to
point out that this is only a testing mode.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Iaabb16c51a0c08391cd2d63b8064c524a748ccb8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76441
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
diff --git a/src/vendorcode/amd/fsp/phoenix/platform_descriptors.h b/src/vendorcode/amd/fsp/phoenix/platform_descriptors.h
index 9335aa7..983c4c9 100644
--- a/src/vendorcode/amd/fsp/phoenix/platform_descriptors.h
+++ b/src/vendorcode/amd/fsp/phoenix/platform_descriptors.h
@@ -192,7 +192,7 @@
 	uint8_t		slot_power_limit;		// PCIe slot power limit
 	uint32_t	slot_power_limit_scale	:2;	// PCIe slot power limit scale
 	uint32_t				:6;
-	uint32_t	link_compliance_mode	:1;	// Force port into compliance mode
+	uint32_t	link_compliance_mode	:1;	// Force port into compliance testing mode
 	uint32_t	link_safe_mode		:1;	// Safe mode capability
 	uint32_t	sb_link			:1;	// Link type
 	uint32_t	clk_pm_support		:1;	// Clock power management support