tcg: Allow ELF_HOST_FLAGS and ELF_OSABI overrides in gdb-jit.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/tcg/tcg.c b/tcg/tcg.c
index df4edc0..ab589c7 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -2360,6 +2360,12 @@
             .e_shentsize = sizeof(ElfW(Shdr)),
             .e_shnum = ARRAY_SIZE(img->shdr),
             .e_shstrndx = ARRAY_SIZE(img->shdr) - 1,
+#ifdef ELF_HOST_FLAGS
+            .e_flags = ELF_HOST_FLAGS,
+#endif
+#ifdef ELF_OSABI
+            .e_ident[EI_OSABI] = ELF_OSABI,
+#endif
         },
         .phdr = {
             .p_type = PT_LOAD,