util/coreboot-configurator: Don't use old style function definition

Use "int foo(void)" instead of old-style "int foo()".

Change-Id: I19869ce2f47b543af4552ea23ce1fd1beea2f892
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77497
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/coreboot-configurator/src/application/NvramToolCli.h

@@ -16,6 +16,6 @@ namespace NvramToolCli {
 Configuration::Parameters readParameters(QString* error = nullptr);
 QStringList readOptions(const QString& parameter, QString* error = nullptr);
 bool writeParameters(const Configuration::Parameters& parameters, QString* error = nullptr);
-QString version();
+QString version(void);
 
 }