Change in coreboot[master]: arch/x86: Reserve space for EC SMSC KBC1098/KBC1126

[Bill XIE (Code Review)]

Attention is currently required from: Bill XIE, Julius Werner.
Hello build bot (Jenkins), Julius Werner, Iru Cai (vimacs),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/51671

to look at the new patch set (#2).

Change subject: arch/x86: Reserve space for EC SMSC KBC1098/KBC1126
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arch/x86: Reserve space for EC SMSC KBC1098/KBC1126

According to util/kbc1126/README.md, for these ECs to work, the
address and size of their two firmware should be written to $s-0x100`
(`$s` means the image size, done with kbc1126_ec_insert), which means
that every existing section (especially those used to store code)
should not overlap this address, otherwise the bootblock will get
damaged when inserting firmwares of the EC.

In this commit the reserved space could be adjusted with kconfig
symbols ECFW_PTR_ADDR and ECFW_PTR_SIZE.

Signed-off-by: Bill XIE 
Change-Id: I4f0de0c4d7283e630242fbe84a46e0547783c49e
---
M src/arch/x86/bootblock.ld
M src/ec/hp/kbc1126/Kconfig
M src/ec/hp/kbc1126/Makefile.inc
A src/ec/hp/kbc1126/ecfw_ptr.c
4 files changed, 31 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/51671/2