Fix warnings from static analysis tools

1.NO_EFFECT:
  a. SecureElement.cpp: closeChannel()
  No effect on checking an unsigned integer less than 0.

2.TAINTED_SCALAR:
  a. phNxpEse_Api.cpp: phNxpEse_readPacket()
   updated code read just 1byte length and mask other bytes

3.INTEGER_OVERFLOW:
  a. phNxpEse_Api.cpp: phNxpEse_read()
  expected length is uint16_t datatype.

Bug: 142626701
Test: VTS
Change-Id: I09b768bb93b7a69a34b3284dd1c86d669cfaed2e
3 files changed