Change in coreboot[master]: mb/google/brask/variants/moli: set eMMC pin in bootblock

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: YH Lin, Zhuohao Lee, Raihow Shi, Felix Held.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62770 )

Change subject: mb/google/brask/variants/moli: set eMMC pin in bootblock
......................................................................

Patch Set 3:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62770/comment/f8d647a3_dfb8316d 
PS3, Line 9: 1.add eMMC enable pin in bootblock
           : 2.set eMMC reset pin unable in bootblock
suggestion:
```
1. Assert eMMC enable pin in bootblock
2. Deassert eMMC reset pin in bootblock
```

Also should reset be deasserted after power enable? in other words, should the controller be powered on with reset asserted (in reset)?

https://review.coreboot.org/c/coreboot/+/62770/comment/9520dc41_3bbb44e8 
PS3, Line 12: 
nit: remove extra blank line

File src/mainboard/google/brya/variants/moli/gpio.c:

https://review.coreboot.org/c/coreboot/+/62770/comment/665c78d8_6ec1ef4a 
PS3, Line 73: /* B3  : PROC_GP2 ==> EMMC_PERST_L */
            : 	PAD_CFG_GPO(GPP_B3, 0, DEEP),
            : 
Please keep line 75 and 73 together, the comment goes with the pad programming