[PATCH for v4.9 LTS 48/87] ASoC: fsl_ssi: set fifo watermark to more reliable value

From: Caleb Crome [ Upstream commit 4ee437fbf626b5ad756889d8bc0fcead3d66dde7 ] The fsl_ssi fifo watermark is by default set to 2 free spaces (i.e. activate DMA on FIFO when only 2 spaces are left.) This means the DMA must service the fifo within 2 audio samples, which is just

[PATCH for v4.9 LTS 48/87] ASoC: fsl_ssi: set fifo watermark to more reliable value

From: Caleb Crome [ Upstream commit 4ee437fbf626b5ad756889d8bc0fcead3d66dde7 ] The fsl_ssi fifo watermark is by default set to 2 free spaces (i.e. activate DMA on FIFO when only 2 spaces are left.) This means the DMA must service the fifo within 2 audio samples, which is just not enough time