acpigen: export acpigen_write_field_name

It will be used in a follow-up change.

Change-Id: If89f9569c33949995d3b45a5f871ff2cb84a6610
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68787
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index acef34d..85b49b2 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -532,7 +532,7 @@
 	acpigen_write_field_length(diff_bits);
 }
 
-static void acpigen_write_field_name(const char *name, uint32_t size)
+void acpigen_write_field_name(const char *name, uint32_t size)
 {
 	acpigen_emit_simple_namestring(name);
 	acpigen_write_field_length(size);
diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h
index 4546cff..789dd47 100644
--- a/src/include/acpi/acpigen.h
+++ b/src/include/acpi/acpigen.h
@@ -519,6 +519,7 @@
 void acpigen_write_create_word_field(uint8_t op, size_t byte_offset, const char *name);
 void acpigen_write_create_dword_field(uint8_t op, size_t byte_offset, const char *name);
 void acpigen_write_create_qword_field(uint8_t op, size_t byte_offset, const char *name);
+void acpigen_write_field_name(const char *name, uint32_t size);
 /*
  * Generate ACPI AML code for _DSM method.
  * This function takes as input uuid for the device, set of callbacks and