Add memory low threshold property when init

MIUI-15062

Change-Id: I3811ccf41542090aba73e5183a1e2eec94564444
Ref-Id: I14db63a5c7f4f203d48d82fe95a99cb03e694194
Remove sp query

N/A

Change-Id: If7d43e3adb5b74c384fffbc9b05fa16abbe8ff10
Ref-Id: Ibb8128bbeb426b1149df8da62a5798c220bd9e53
set imei to the ro.ril.miui.imei system property

N/A

Change-Id: I1791e356c8ab2ee84d3468144f70564c6d103851
Ref-Id: I3fb6224cd69f7c28f2d939eb053a1a2ffcccf74e