Match the QSPI reg address in the socfpga_stratix10_socdk.dts file.

Fixes: 80f132d7 ("arm64: dts: increase the QSPI reg address for Stratix10 and Agilex")
Cc: linux-stable <stable@vger.kernel.org> # >= v5.6
Signed-off-by: Dinh Nguyen <dinh.nguyen@intel.com>