soc/amd/common: Introduce agesa_execute_state()

Each entrypoint to AGESA goes through the same sequence
and have same the function signature.

To avoid introducing bunch of preprocessor magic, rename
all the agesawrapper_amdXXX() functions that are actual
entrypoints to AGESA API, make them static, and provide
a single exposed entry function agesa_execute_state().

Change-Id: I96ae1874132da3843aa42c2f4e8a59ec771d3893
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31483
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/stoneyridge/chip.c

@@ -163,12 +163,11 @@ static void earliest_ramstage(void *unused)
 			psp_load_named_blob(MBOX_BIOS_CMD_SMU_FW2, "smu_fw2");
 
 		post_code(0x47);
-		do_agesawrapper(agesawrapper_amdinitenv, "amdinitenv");
+		do_agesawrapper(AMD_INIT_ENV, "amdinitenv");
 	} else {
 		/* Complete the initial system restoration */
 		post_code(0x46);
-		do_agesawrapper(agesawrapper_amds3laterestore,
-						"amds3laterestore");
+		do_agesawrapper(AMD_S3LATE_RESTORE, "amds3laterestore");
 	}
 }