[ARM] tegra: Add ZRELADDR default for ARCH_TEGRA

fixes the warning:
.config:369:warning: symbol value '' invalid for ZRELADDR

and the prompt for ZRELADDR on make

Signed-off-by: Erik Gilling <konkers@android.com>

+1
+1
arch/arm/Kconfig
··· 1601 1601 ARCH_ORION5X ||\ 1602 1602 ARCH_SPEAR3XX ||\ 1603 1603 ARCH_SPEAR6XX ||\ 1604 + ARCH_TEGRA ||\ 1604 1605 ARCH_U8500 ||\ 1605 1606 ARCH_VERSATILE ||\ 1606 1607 ARCH_W90X900