disk: add TegraPT support

TegraPT is compatible with EFI part but it can't pass Protective MBR check.
Skip this check if CONFIG_TEGRA_PARTITION is enabled, storage uclass is MMC
and devnum is 0. Note, eMMC on supported devices MUST be aliased to mmc0.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/disk/Kconfig b/disk/Kconfig
index ffa835e..b0bd025 100644
--- a/disk/Kconfig
+++ b/disk/Kconfig
@@ -49,6 +49,16 @@
 	default y if MAC_PARTITION
 	select SPL_PARTITIONS
 
+config TEGRA_PARTITION
+	bool "Enable Nvidia Tegra partition table"
+	select PARTITIONS
+	select EFI_PARTITION
+	help
+	  Say Y here if you would like to use U-Boot on a device that
+	  is using the Nvidia Tegra partition table and cannot alter it.
+
+	  If unsure, say N.
+
 config DOS_PARTITION
 	bool "Enable MS Dos partition table"
 	default y if BOOT_DEFAULTS