change config file naming

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

SPECS/kernel-5.15.spec

@@ -382,9 +382,9 @@ BuildKernel() {
     # Select the correct flavour configuration file.
     if [ -z "${Flavour}" ]; then
         #%{__cp} config-%{version}-%{_target_cpu} .config
-        %{__cp} config-%{version}-%{configarch} .config
+        %{__cp} config-%{cpuarch} .config
     else
-        %{__cp} config-%{version}-%{_target_cpu}-${Flavour} .config
+        %{__cp} config-%{_target_cpu}-${Flavour} .config
     fi
 
     %define KVRFA %{version}-%{release}${Flavour}.%{_target_cpu}