gnu: novena-eeprom: Build with older i2c-tools.

* gnu/packages/admin.scm (novena-eeprom)[inputs]: Build with i2c-tools-3.
* gnu/packages/linux.scm (i2c-tools-3): New variable.

gnu/packages/admin.scm

@@ -4770,7 +4770,7 @@ (define-public novena-eeprom
                (install-file "novena-eeprom" out-bin)
                (install-file "novena-eeprom.8" out-share-man)))))))
     (inputs
-     (list i2c-tools))
+     (list i2c-tools-3))
     (synopsis "Novena EEPROM editor")
     (description "This package provides an editor for the Novena EEPROM.
 Novena boards contain a device-dependent descriptive EEPROM that defines

gnu/packages/linux.scm

@@ -4507,6 +4507,24 @@ (define-public i2c-tools
 SMBus access.")
     (license license:gpl2+)))
 
+(define-public i2c-tools-3
+  (package
+    (inherit i2c-tools)
+    (name "i2c-tools")
+    (version "3.1.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "http://jdelvare.nerim.net/mirror/i2c-tools/i2c-tools-"
+                    version ".tar.bz2"))
+              (sha256
+               (base32 "0hd4c1w8lnwc3j95h3vpd125170l1d4myspyrlpamqx6wbr6jpnv"))))
+    (arguments
+     (substitute-keyword-arguments (package-arguments i2c-tools)
+       ((#:make-flags _)
+        #~(list (string-append "prefix=" #$output)
+                (string-append "CC=" #$(cc-for-target))))))))
+
 (define-public xsensors
   (package
     (name "xsensors")