Consider apt/yum upgrade operation check in package scripts.

Include the upgrade operation check in the prerm and postun scripts
in package.

Signed-off-by: Saravanan Solaiyappan <saravanan.solaiyappan@amd.com>
Change-Id: Ide29b84e59eea6154276f790e353a25506dd3bdb


[ROCm/rdc commit: 6a345a064e]

projects/rdc/DEBIAN/prerm

@@ -12,7 +12,7 @@ reload_systemd() {
 set -e
 
 case "$1" in
-   remove)
+   remove | upgrade )
        stop_rdc
        unlink /lib/systemd/system/rdc.service
        reload_systemd

projects/rdc/src/RPM_postun.in

@@ -9,7 +9,8 @@ reload_systemd() {
     return 0
 }
 
-if [ $1 -eq 0 ]; then
+if [ $1 -le 1 ]; then
+    # perform the below actions for rpm remove($1=0) or upgrade($1=1) operations
     stop_rdc
     unlink @DISTRO_ROOT@/rdc.service
     reload_systemd