binderRpcTest: Give more stack on Trusty

Increase the maximum binderRpcTest stack size on Trusty
by one page to fix qemu-generic-arm64-fuzz-test-debug crashes
since aosp/2809894.

Bug: None
Test: build.py --test boot-test:com.android.trusty.binderRpcTest \
    qemu-generic-arm64-fuzz-test-debug
Change-Id: I05247f45c164a67b5ffe5cb8fadfd2e423188ffc