package/hackrf: replace BSD-3c by BSD-3-Clause

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 9f41dfe7877ce3d19cc848e5f4852f1acc2c0798)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/hackrf/hackrf.mk

@@ -7,7 +7,7 @@
 HACKRF_VERSION = 2018.01.1
 HACKRF_SITE = https://github.com/mossmann/hackrf/releases/download/v$(HACKRF_VERSION)
 HACKRF_SOURCE = hackrf-$(HACKRF_VERSION).tar.xz
-HACKRF_LICENSE = GPL-2.0+ BSD-3c
+HACKRF_LICENSE = GPL-2.0+ BSD-3-Clause
 HACKRF_LICENSE_FILES = COPYING
 HACKRF_DEPENDENCIES = fftw-single libusb
 HACKRF_SUBDIR = host