gnu: lm-sensors: Patch references to ‘egrep’.

* gnu/packages/linux.scm (lm-sensors)[arguments]: Patch unqualified
references to ‘egrep’ as well as ‘grep’.

Co-authored-by: Tobias Geerinckx-Rice <me@tobias.gr>

gnu/packages/linux.scm

@@ -3541,9 +3541,9 @@ (define-public lm-sensors
                (("cat ")
                 (string-append (assoc-ref inputs "coreutils")
                                "/bin/cat "))
-               (("grep ")
+               (("e?grep " match)
                 (string-append (assoc-ref inputs "grep")
-                               "/bin/grep "))
+                               "/bin/" match))
                (("sed -e")
                 (string-append (assoc-ref inputs "sed")
                                "/bin/sed -e"))