Don't use initial-exec tls model for musl

Musl libc fails if a dlopened library contains initial-exec TLS
relocations:
JniInvocation E 10-19 14:05:53 14157 14157] Failed to dlopen libart.so: Error relocating out/host/linux-x86/lib64/libart.so: (null): initial-exec TLS resolves to dynamic definition in out/host/linux-x86/lib64/libart.so

Remove the tls_model attribute when using musl.  This undoes part
of the optimization from b/138329277.

Bug: 190084016
Test: m USE_HOST_MUSL=true out/target/common/obj/JAVA_LIBRARIES/ahat-test-dump_intermediates/test-dump-base.hprof
Change-Id: I7097be4e458b02908b0ad06e6e712dae5cb01d60
1 file changed