soc/amd: Rename chipset_state to chipset_power_state

To implement some common helpers for CBMEM_ID_POWER_STATE
allocation use the same struct name as soc/intel.

Change-Id: I5d2c06a2a7b4602374562197c99b0ad7bcf50afb
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49835
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/soc/amd/stoneyridge/southbridge.c

@@ -404,7 +404,7 @@ static void sb_init_acpi_ports(void)
 
 void southbridge_init(void *chip_info)
 {
-	struct chipset_state *state;
+	struct chipset_power_state *state;
 
 	sb_init_acpi_ports();