plugins/: Add missing functions to symbol list

Some functions of the plugin API were missing in
the symbol list. However, they are all used by
the contributed example plugins. QEMU fails to
load the plugin if the function symbol is not
exported.

Signed-off-by: Lukas Jünger <lukas.junger@greensocs.com>
Message-Id: <20210905140939.638928-2-lukas.junger@greensocs.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210917162332.3511179-11-alex.bennee@linaro.org>

plugins/qemu-plugins.symbols

@@ -1,11 +1,14 @@
 {
   qemu_plugin_bool_parse;
   qemu_plugin_get_hwaddr;
+  qemu_plugin_hwaddr_device_name;
   qemu_plugin_hwaddr_is_io;
+  qemu_plugin_hwaddr_phys_addr;
   qemu_plugin_insn_data;
   qemu_plugin_insn_disas;
   qemu_plugin_insn_haddr;
   qemu_plugin_insn_size;
+  qemu_plugin_insn_symbol;
   qemu_plugin_insn_vaddr;
   qemu_plugin_mem_is_big_endian;
   qemu_plugin_mem_is_sign_extended;