trusty: Add keymaster fuzzer corpus

Add an initial corpus for the keymaster fuzzer derived from running the
keystore2 unittests.

Test: adb shell "cd /data/fuzz/arm64/trusty_keymaster_fuzzer/ && ./trusty_keymaster_fuzzer corpus"
Bug: 175918322
Change-Id: I839bb9bacee1800cf2da25aedbb4ce3eccf16cba