package/openocd: allow CMSIS-DAP support

In commit aa441aa84c38ad5319c4ff7fb27c84530e19c204 ("openocd: bump to
version 0.8.0"), some logic in openocd.mk was added to enable
CMSIS-DAP when BR2_PACKAGE_OPENOCD_CMSIS_DAP is enabled, but this
option was not created, because hidapi was not packaged in
Buildroot. This package now exists, so we can create
BR2_PACKAGE_OPENOCD_CMSIS_DAP and really make it possible to build
CMSIS DAP support.

Signed-off-by: Matt Wood <mattwood2000@gmail.com>
[Thomas:
 - rework commit log
 - add missing "depends on" in Config.in]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/openocd/Config.in

@@ -9,6 +9,17 @@ if BR2_PACKAGE_OPENOCD
 
 comment "Adapters"
 
+config BR2_PACKAGE_OPENOCD_CMSIS_DAP
+	bool "CMSIS-DAP compliant debuggers"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libusb
+	depends on BR2_PACKAGE_HAS_UDEV # hidapi
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # hidapi
+	select BR2_PACKAGE_LIBUSB
+	select BR2_PACKAGE_HIDAPI
+	help
+          Enable support for CMSIS-DAP compliant debuggers (i.e
+          Atmel/Microchip EDBG, etc.)
+
 config BR2_PACKAGE_OPENOCD_FTDI
 	bool "MPSSE mode of FTDI based devices"
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libusb

package/openocd/openocd.mk

@@ -35,7 +35,8 @@ OPENOCD_DEPENDENCIES = \
 	$(if $(BR2_PACKAGE_LIBFTDI1),libftdi1) \
 	$(if $(BR2_PACKAGE_LIBUSB),libusb) \
 	$(if $(BR2_PACKAGE_LIBUSB_COMPAT),libusb-compat) \
-	$(if $(BR2_PACKAGE_LIBHID),libhid)
+	$(if $(BR2_PACKAGE_LIBHID),libhid) \
+	$(if $(BR2_PACKAGE_HIDAPI),hidapi)
 
 # Adapters
 OPENOCD_CONF_OPTS += \