spi25_statusreg.c: add SR3 read/write support

Adds support for reading and writing the third status register.

Feature flag is not needed because it would never on its own control
whether SR3 access occurs.  If added, it would be in one of three
possible states: wrong, useless or redundant.

Change-Id: Id987c544c02da2b956e6ad2c525265cac8f15be1
Signed-off-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/60230
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/flash.h b/flash.h
index b283c6cb2..509f2266f 100644
--- a/flash.h
+++ b/flash.h
@@ -174,6 +174,7 @@ enum flash_reg {
 	INVALID_REG = 0,
 	STATUS1,
 	STATUS2,
+	STATUS3,
 	MAX_REGISTERS
 };