PCI: tegra: Fix typo for PCIe endpoint mode in Tegra194

In config PCIE_TEGRA194_EP the mode incorrectly is referred to as
host mode. Fix it.

Link: https://lore.kernel.org/r/20201231032539.22322-1-wesley.sheng@amd.com


Signed-off-by: Wesley Sheng <wesley.sheng@amd.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Acked-by: Vidya Sagar <vidyas@nvidia.com>