[Platform]: Adjust stable size parameter of SDK for as4630_54te

Why I did it:
    After DUT starts up, the syncd cannot work.
    And, the syslog will indicate:
      - ERR syncd#syncd: [none] SAI_API_SWITCH:platform_process_command:430 Platform command "init bcm" failed, rc = -1.
      - INFO syncd#supervisord: syncd Scache on unit 0 exhausted the stable_size of 76303156#015

How I dit it:
    Modify SDK configuration file of as4630_54te (followed as4630_54pe)

How to verify it:
    Check syncd is running normally after DUT starts up, and no related error syslog exists.

device/accton/x86_64-accton_as4630_54te-r0/Accton-AS4630-54TE/hx5-as4630-48x1G+4x25G+2x100G.bcm

@@ -1,4 +1,4 @@
-stable_size=76303168
+stable_size=0x5500000
 
 #polarity/lanemap is using TH2 style.
 core_clock_frequency=893