[M] Change in coreboot[main]: soc/mediatek/mt8196: Add disable modem power driver

[Yidi Lin (Code Review)]

Attention is currently required from: Hung-Te Lin, Jarried Lin, Yu-Ping Wu.

Yidi Lin has posted comments on this change by Jarried Lin. ( https://review.coreboot.org/c/coreboot/+/85651?usp=email )

Change subject: soc/mediatek/mt8196: Add disable modem power driver
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Patch Set 3:

(3 comments)

File src/soc/mediatek/mt8196/include/soc/md_power_ctrl.h:

https://review.coreboot.org/c/coreboot/+/85651/comment/db1516a3_815a37c7?usp... :
PS3, Line 9: md
modem

File src/soc/mediatek/mt8196/md_power_ctrl.c:

https://review.coreboot.org/c/coreboot/+/85651/comment/22a60db4_4c9ee0db?usp... :
PS3, Line 90: 	struct pmif *pmif_arb = get_pmif_controller(PMIF_SPMI, SPMI_MASTER_1);
            : 
            : 	/* Vsram_vosel = 0x24d, read Vsram value */
            : 	reg = VSRAM_VOSEL;
            : 	pmif_arb->read(pmif_arb, SPMI_SLAVE_4, reg, &val);
            : 
            : 	/* Vmodem_vosel = 0x24e, write Vmodem 0.75V */
            : 	reg = VMODEM_VOSEL;
            : 	pmif_arb->write(pmif_arb, SPMI_SLAVE_4, reg, SPMI_SLAVE_4_750MV);
            : 	pmif_arb->read(pmif_arb, SPMI_SLAVE_4, reg, &val);
Add `mt6363_write8` to `common/mt6363.c`.
Call `mt6363_init_pmif_arb` and use read8/write8 APIs from mt6363 here.

https://review.coreboot.org/c/coreboot/+/85651/comment/d06a0fa3_8951e47f?usp... :
PS3, Line 124: 
             : 	while ((read32(&mtk_apifrbus_ao_io_reg_bus->sleep_protect_rdy_sta_1) &
             : 		       MD1_PROT_STEP0_0_ACK_MASK) != MD1_PROT_STEP0_0_ACK_MASK) {
             : 		printk(BIOS_INFO, "First check: Does not get MD1_PROT_STEP0_0_ACK_MASK\n");
             : 		retryCount++;
             : 		if (retryCount > MAX_RETRY_COUNT) {
             : 			printk(BIOS_INFO, "First check: check failed\n");
             : 			break;
             : 		}
             : 	}
use `retry` API or implement a `wait_for_state_ready` function