ayufan: dts: rockpro64: fix i2s2 (4x speed of audio)

Change-Id: I28b1b853871bece3c6c6b41a0f32c37748971b60
1 job for release-4.4 in 7 minutes and 19 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #85790037
build

00:07:19