pi: remove boot watchdog

This does *not* work how RPi documents it to work. Docs say that the
watchdog is cleared as soon as the arm core starts the actual OS. What
actually happens is that the OS starts, and then 30 seconds after boot,
the Pi hard-resets. Whoops.

Author: passcod

image/pi-eeprom-config.txt

@@ -3,6 +3,5 @@ BOOT_UART=1
 BOOT_ORDER=0xf61
 POWER_OFF_ON_HALT=1
 PCIE_PROBE=1
-BOOT_WATCHDOG_TIMEOUT=30
 HDMI_DELAY=0
 PSU_MAX_CURRENT=5000

tests/test-pi-eeprom-sd.sh

@@ -55,7 +55,6 @@ check "BOOT_UART=1 baked in"            expect_setting BOOT_UART=1
 check "BOOT_ORDER=0xf61 baked in"       expect_setting BOOT_ORDER=0xf61
 check "POWER_OFF_ON_HALT=1 baked in"    expect_setting POWER_OFF_ON_HALT=1
 check "PCIE_PROBE=1 baked in"           expect_setting PCIE_PROBE=1
-check "BOOT_WATCHDOG_TIMEOUT=30 baked in" expect_setting BOOT_WATCHDOG_TIMEOUT=30
 check "HDMI_DELAY=0 baked in"           expect_setting HDMI_DELAY=0
 check "PSU_MAX_CURRENT=5000 baked in"   expect_setting PSU_MAX_CURRENT=5000