ANDROID: KVM: arm64: Fix pKVM module symbols import

Not only the pkvm_sym::name string isn't NULL-terminated and a strcmp wouldn't stop at the upper boundary of that string. But also if that symbol is the first one of the .hyp.text section, import will fail.

Fix those both issues.

Bug: 333671007
Bug: 357781595
Bug: 448784949
Change-Id: I9204f4745f3babf6a02e52b556478daf665de245
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>