package/flashrom: libusb-compat is optional, not mandatory

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit b36054fc7ca55b73fa09d68b239b45d0e30364e9)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/flashrom/Config.in

@@ -3,7 +3,6 @@ config BR2_PACKAGE_FLASHROM
 	depends on BR2_i386 || BR2_x86_64
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libusb
 	select BR2_PACKAGE_LIBUSB
-	select BR2_PACKAGE_LIBUSB_COMPAT
 	help
 	  flashrom is a utility for identifying, reading, writing,
 	  verifying and erasing flash chips. It is designed to flash

package/flashrom/flashrom.mk

@@ -7,7 +7,7 @@
 FLASHROM_VERSION = 1.0
 FLASHROM_SOURCE = flashrom-$(FLASHROM_VERSION).tar.bz2
 FLASHROM_SITE = https://download.flashrom.org/releases
-FLASHROM_DEPENDENCIES = libusb libusb-compat host-pkgconf
+FLASHROM_DEPENDENCIES = libusb host-pkgconf
 FLASHROM_LICENSE = GPL-2.0+
 FLASHROM_LICENSE_FILES = COPYING
 
@@ -22,6 +22,13 @@ FLASHROM_MAKE_OPTS += \
 	CONFIG_USBBLASTER_SPI=no
 endif
 
+ifeq ($(BR2_PACKAGE_LIBUSB_COMPAT),y)
+FLASHROM_DEPENDENCIES += host-pkgconf libusb-compat
+FLASHROM_MAKE_OPTS += CONFIG_ENABLE_LIBUSB0_PROGRAMMERS=yes
+else
+FLASHROM_MAKE_OPTS += CONFIG_ENABLE_LIBUSB0_PROGRAMMERS=no
+endif
+
 ifeq ($(BR2_PACKAGE_PCIUTILS),y)
 FLASHROM_DEPENDENCIES += pciutils
 FLASHROM_MAKE_OPTS += CONFIG_ENABLE_LIBPCI_PROGRAMMERS=yes