msm: ADSPRPC: Use module specific class name

Update the class name passed during class creation to match the module
rather than use a generic one. If another driver uses this same generic
name then the class creation would fail.

Change-Id: I33d7527e27c56fd943c93f823d99d244e2348319
Acked-by: Sathish Ambley <sambley@qti.qualcomm.com>
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>