gnu: airspyhf: Update to 1.6.8-1.40836c5.

* gnu/packages/radio.scm (airspyhf): Update to 1.6.8-1.40836c5.

gnu/packages/radio.scm

@@ -277,18 +277,20 @@ this package.  E.g.: @code{(udev-rules-service 'rtl-sdr rtl-sdr)}")
       (license license:gpl2+))))
 
 (define-public airspyhf
+  (let ((commit "40836c59d35d989fe00ac12ef774df736a36c6e4")
+        (revision "1"))
     (package
       (name "airspyhf")
-    (version "1.6.8")
+      (version (git-version "1.6.8" revision commit))
       (source
        (origin
          (method git-fetch)
          (uri (git-reference
                (url "https://github.com/airspy/airspyhf")
-             (commit version)))
+               (commit commit)))
          (file-name (git-file-name name version))
          (sha256
-        (base32 "0n699i5a9fzzhf80fcjlqq6p2a013rzlwmwv4nmwfafy6c8cr924"))))
+          (base32 "1s3fm856smvja3cg6fy615igir8wb0dzbp0q25v3vls0qj6pvprb"))))
       (build-system cmake-build-system)
       (native-inputs
        (list pkg-config))
@@ -316,12 +318,12 @@ this package.  E.g.: @code{(udev-rules-service 'rtl-sdr rtl-sdr)}")
       (home-page "https://github.com/airspy/airspyhf")
       (synopsis "Software defined radio driver for Airspy HF+")
       (description
-     "This package provides the driver and utilities for controlling the Airspy
-HF+ Software Defined Radio (SDR) over USB.
+       "This package provides the driver and utilities for controlling the
+Airspy HF+ Software Defined Radio (SDR) over USB.
 
 To install the airspyhf udev rules, you must extend @code{udev-service-type}
 with this package.  E.g.: @code{(udev-rules-service 'airspyhf airspyhf)}")
-    (license license:bsd-3)))
+      (license license:bsd-3))))
 
 (define-public soapysdr
   (package