package/fwts: add optional bash-completion dependency

fwts uses the completionsdir variable from bash-completion.pc to decide
where to install things.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/fwts/fwts.mk

@@ -11,6 +11,7 @@ FWTS_LICENSE = GPL-2.0, LGPL-2.1, Custom
 FWTS_LICENSE_FILES = debian/copyright
 FWTS_AUTORECONF = YES
 FWTS_DEPENDENCIES = host-bison host-flex host-pkgconf json-c libglib2 libbsd \
+	$(if $(BR2_PACKAGE_BASH_COMPLETION),bash-completion) \
 	$(if $(BR2_PACKAGE_DTC),dtc)
 
 ifdef BR2_PACKAGE_FWTS_EFI_RUNTIME_MODULE