tegra132: select HAVE_MONOTONIC_TIMER

The tegra132 SoC provides the monotonic timer API. Therefore,
ensure the reset of the coreboot infrastructure is aware.

BUG=None
BRANCH=None
TEST=Built and ran on Ryu. Noted that ramsgage is showing timings
     for each bootstate.

Change-Id: I9b8fcf38cba9bdaaf0455701df1d6328bf1927c1
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/211132
Reviewed-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>

src/soc/nvidia/tegra132/Kconfig

@@ -6,6 +6,7 @@ config SOC_NVIDIA_TEGRA132
 	select ARCH_RAMSTAGE_ARM_V8_64
 	select ARM_LPAE
 	select BOOTBLOCK_CONSOLE
+	select HAVE_MONOTONIC_TIMER
 	select HAVE_HARD_RESET
 	select HAVE_UART_SPECIAL
 	select HAVE_UART_MEMORY_MAPPED