nongnu: Add rtlwifi-firmware.

* nongnu/packages/linux.scm (rtlwifi-firmware): New variable.

nongnu/packages/linux.scm

@@ -354,3 +354,43 @@ chipsets from Broadcom:
        "https://raw.githubusercontent.com/winterheart/broadcom-bt-firmware"
        "/b60fa04881bf8f9b9d578f57d1dfa596cae2a82e"
        "/LICENSE.broadcom_bcm20702")))))
+
+
+(define-public rtlwifi-firmware
+  (package
+    (inherit linux-firmware)
+    (name "rtlwifi-firmware")
+    (build-system trivial-build-system)
+    (arguments
+     `(#:modules ((guix build utils))
+       #:builder
+       (begin
+         (use-modules (guix build utils))
+         (let* ((source (assoc-ref %build-inputs "source"))
+                (fw-dir (string-append %output "/lib/firmware/"))
+                (bin-dir (string-append fw-dir "/rtlwifi")))
+           (mkdir-p bin-dir)
+           (copy-recursively (string-append source "/rtlwifi") bin-dir)
+           (install-file (string-append source "/LICENSE.rtlwifi_firmware.txt") fw-dir)
+           #t))))
+    (home-page "https://wireless.wiki.kernel.org/en/users/drivers/rtl819x")
+    (synopsis "Non-free firmware for Realtek wifi chips")
+    (description "Non-free firmware for Realtek wifi chips. This package contains non-free firmware for the following chips:
+@itemize
+@item rtl8192ce
+@item rtl8192cu
+@item rtl8192se
+@item rtl8192de
+@item rtl8188ee
+@item rtl8192ee
+@item rtl8723ae
+@item rtl8723be
+@item rtl8821ae
+@item rtl8822be
+@item rtl8723de
+@end itemize")
+    (license
+     (nonfree
+      (string-append
+       "https://git.kernel.org/?p=linux/kernel/git/firmware"
+       "/linux-firmware.git;a=blob_plain;f=LICENCE.rtlwifi_firmware.txt;hb=HEAD")))))