[S] Change in coreboot[main]: mainboard/qemu-riscv: Get top of memory from device-tree blob

[Alper Nebi Yasak (Code Review)]

Attention is currently required from: Maximilian Brune, Nico Huber, Philipp Hug, Ron Minnich.

Alper Nebi Yasak has posted comments on this change by Alper Nebi Yasak. ( https://review.coreboot.org/c/coreboot/+/80363?usp=email )

Change subject: mainboard/qemu-riscv: Get top of memory from device-tree blob
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Patch Set 4:

(2 comments)

File src/mainboard/emulation/qemu-riscv/cbmem.c:

https://review.coreboot.org/c/coreboot/+/80363/comment/d53bb3c3_e3fa8071?usp... :
PS3, Line 11: 	if (CONFIG(FLATTENED_DEVICE_TREE)) {
> Now that there is no shared soc code anymore we don't need that anymore.

Done, thanks!

File src/soc/ucb/riscv/cbmem.c:

https://review.coreboot.org/c/coreboot/+/80363/comment/ac9e5a1d_9e4e0d52?usp... :
PS2, Line 13: 	top = fdt_get_memory_top((void *)HLS()->fdt);
> I wonder why they share a SoC. Though to me, the most straight forward option […]

Done in patchset 3. But a mainboard-specific `cbmem.c` had been added, so reverted  as the config check is no longer necessary as Maximilian said.