soc: apple: rtkit: Add and use PWR_STATE_INIT instead of _ON

This state is needed to wake the dcp IOP after m1n1 shut it down
and works for all other co-processors as well.

Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://lore.kernel.org/r/20250226-apple-soc-misc-v2-1-c3ec37f9021b@svenpeter.dev
Signed-off-by: Sven Peter <sven@svenpeter.dev>

drivers/soc/apple/rtkit.c

@@ -12,6 +12,7 @@ enum {
 	APPLE_RTKIT_PWR_STATE_IDLE = 0x201, /* sleeping, retain state */
 	APPLE_RTKIT_PWR_STATE_QUIESCED = 0x10, /* running but no communication */
 	APPLE_RTKIT_PWR_STATE_ON = 0x20, /* normal operating state */
+	APPLE_RTKIT_PWR_STATE_INIT = 0x220, /* init after starting the coproc */
 };
 
 enum {
@@ -898,7 +899,7 @@ int apple_rtkit_wake(struct apple_rtkit *rtk)
 	 * Use open-coded apple_rtkit_set_iop_power_state since apple_rtkit_boot
 	 * will wait for the completion anyway.
 	 */
-	msg = FIELD_PREP(APPLE_RTKIT_MGMT_PWR_STATE, APPLE_RTKIT_PWR_STATE_ON);
+	msg = FIELD_PREP(APPLE_RTKIT_MGMT_PWR_STATE, APPLE_RTKIT_PWR_STATE_INIT);
 	ret = apple_rtkit_management_send(rtk, APPLE_RTKIT_MGMT_SET_IOP_PWR_STATE,
 					  msg);
 	if (ret)