ARM: dts: ipc: Change sound card name

- Change sound card name to support
  non-idp feature like line-in.
  With this soundcard name ipc specific
  mixer file will be used for support
  features.

Change-Id: Ic3176c6b794cf0c686241e259e33a493fcc11d32
Signed-off-by: Sachin Mohan Gadag <sgadag@codeaurora.org>