[device/accton/as4630-54pe] Fix accton driver not been installed (#6321)

Accton util applies lsmod to check if drivers are installed.
But lsmod may return error on startup and skip module installation.

Signed-off-by: roy_lee <roy_lee@edge-core.com>

platform/broadcom/sonic-platform-modules-accton/as4630-54pe/utils/accton_as4630_54pe_util.py

@@ -214,10 +214,12 @@ def log_os_system(cmd, show):
     return  status, output
 
 def driver_inserted():
-    ret, lsmod = log_os_system("lsmod| grep accton", 0)
+    ret, lsmod = log_os_system("ls /sys/module/*accton*", 0)
     logging.info('mods:'+lsmod)
-    if len(lsmod) ==0:
+    if ret :
         return False
+    else :
+        return True
 
 #'modprobe cpr_4011_4mxx',