mb/google/brox/var/lotso: Reduce gspi speed from 10 MHz to 9 MHz
Reduce gspi speed from 10 MHz to 9 MHz, because Raptor
Lake Refresh platform GSPI supports max frequency 9 MHz.
BUG=b:
342932183
TEST=emerge-brox coreboot
Change-Id: If5b7885d95cfe21ec71cc37e6d72419935b0844f
Signed-off-by: Kun Liu <liukun11@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84708
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Jian Tong <tongjian@huaqin.corp-partner.google.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>