*/Makefile: Always build enable_usbdebug.c

This always builds the usb debug callback functions when implemented.
They get garbage collected if CONFIG_USBDEBUG is not set.

Change-Id: I33051df583645cd00d08e06774383763172d5822
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36881
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mike Banon <mikebdp2@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/soc/amd/stoneyridge/Makefile.inc

@@ -42,7 +42,7 @@ bootblock-y += BiosCallOuts.c
 bootblock-y += bootblock/bootblock.c
 bootblock-y += gpio.c
 bootblock-y += i2c.c
-bootblock-$(CONFIG_USBDEBUG) += enable_usbdebug.c
+bootblock-y += enable_usbdebug.c
 bootblock-y += monotonic_timer.c
 bootblock-y += pmutil.c
 bootblock-y += reset.c
@@ -54,7 +54,7 @@ bootblock-$(CONFIG_HAVE_SMI_HANDLER) += smi_util.c
 romstage-y += BiosCallOuts.c
 romstage-y += i2c.c
 romstage-y += romstage.c
-romstage-$(CONFIG_USBDEBUG) += enable_usbdebug.c
+romstage-y += enable_usbdebug.c
 romstage-y += gpio.c
 romstage-y += monotonic_timer.c
 romstage-y += pmutil.c
@@ -89,7 +89,7 @@ ramstage-y += i2c.c
 ramstage-y += chip.c
 ramstage-y += cpu.c
 ramstage-y += mca.c
-ramstage-$(CONFIG_USBDEBUG) += enable_usbdebug.c
+ramstage-y += enable_usbdebug.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c
 ramstage-y += gpio.c
 ramstage-y += monotonic_timer.c

src/soc/intel/broadwell/Makefile.inc

@@ -65,9 +65,9 @@ romstage-y += tsc_freq.c
 smm-y      += tsc_freq.c
 postcar-y  += tsc_freq.c
 verstage-y += tsc_freq.c
-bootblock-$(CONFIG_USBDEBUG) += usb_debug.c
-romstage-$(CONFIG_USBDEBUG) += usb_debug.c
-ramstage-$(CONFIG_USBDEBUG) += usb_debug.c
+bootblock-y += usb_debug.c
+romstage-y += usb_debug.c
+ramstage-y += usb_debug.c
 ramstage-y += ehci.c
 ramstage-y += xhci.c
 smm-y      += xhci.c