kernel: Add phosphor-wdt-on-panic KERNEL_FEATURE

phosphor-wdt-on-panic configures the kernel with an infinite panic
timeout, with the expectation that the hardware watchdog will bite and
reset the BMC. On Witherspoon systems this allows the SoC to boot from
the alternate BMC firmware flash device.

Change-Id: I45f5c5175484a2c386f5104194f16d8d6fa0aec9
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/common/recipes-kernel/linux/linux-obmc.inc b/common/recipes-kernel/linux/linux-obmc.inc
index 271f325..274db26 100644
--- a/common/recipes-kernel/linux/linux-obmc.inc
+++ b/common/recipes-kernel/linux/linux-obmc.inc
@@ -12,6 +12,8 @@
 SRC_URI += "file://phosphor-gpio-keys.cfg"
 SRC_URI += "file://phosphor-vlan.scc"
 SRC_URI += "file://phosphor-vlan.cfg"
+SRC_URI += "file://phosphor-wdt-on-panic.scc"
+SRC_URI += "file://phosphor-wdt-on-panic.cfg"
 SRC_URI_append_df-obmc-ubi-fs = " file://0001-ARM-dts-Aspeed-Witherspoon-Update-BMC-partitioning.patch"
 
 
diff --git a/common/recipes-kernel/linux/linux-obmc/phosphor-wdt-on-panic.cfg b/common/recipes-kernel/linux/linux-obmc/phosphor-wdt-on-panic.cfg
new file mode 100644
index 0000000..329b4df
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-obmc/phosphor-wdt-on-panic.cfg
@@ -0,0 +1,2 @@
+CONFIG_PANIC_ON_OOPS=y
+CONFIG_PANIC_TIMEOUT=0
diff --git a/common/recipes-kernel/linux/linux-obmc/phosphor-wdt-on-panic.scc b/common/recipes-kernel/linux/linux-obmc/phosphor-wdt-on-panic.scc
new file mode 100644
index 0000000..7fc6507
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-obmc/phosphor-wdt-on-panic.scc
@@ -0,0 +1,2 @@
+define KFEATURE_DESCRIPTION "Require watchdog to reset SoC on panic"
+kconf non-hardware phosphor-wdt-on-panic.cfg