This reverts commit 
bd750e7a6c515c081b72d4ef108a2bfa691a3fd1
Implemented the new workaround for auto tuning based on
zynqmp compatible string, so removed the 'broken-tuning'
property.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
                        interrupts = <0 48 4>;
                        reg = <0x0 0xff160000 0x1000>;
                        clock-names = "clk_xin", "clk_ahb";
-                       broken-tuning;
                        xlnx,device_id = <0>;
                        #stream-id-cells = <1>;
                        iommus = <&smmu 0x870>;
                        interrupts = <0 49 4>;
                        reg = <0x0 0xff170000 0x1000>;
                        clock-names = "clk_xin", "clk_ahb";
-                       broken-tuning;
                        xlnx,device_id = <1>;
                        #stream-id-cells = <1>;
                        iommus = <&smmu 0x871>;