arm: mvebu: turris_omnia: Enable NVMe support

PCIe-based NVMe SSD disks in M.2 2230/2242/2260 form-factor can be
connected to Turris Omnia mPCIe slot via passive M.2 <--> mPCIe adapter.

So enable PCIe NVMe drivers.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/configs/turris_omnia_defconfig b/configs/turris_omnia_defconfig
index cd443ce..2acc4ad 100644
--- a/configs/turris_omnia_defconfig
+++ b/configs/turris_omnia_defconfig
@@ -77,6 +77,7 @@
 CONFIG_PHY_GIGE=y
 CONFIG_MVNETA=y
 CONFIG_MII=y
+CONFIG_NVME=y
 CONFIG_PCI=y
 CONFIG_PCI_MVEBU=y
 CONFIG_DM_RTC=y