msm_fb: [HDMI_COMPLIANCE] Update audio ARCs for 480p

As per HDMI specification, the correct pixel clock rate
for 480p should be 27.027 MHz. In the code, we are
currently using 27.03 MHz and thus the audio constants
corresponding to this clock rate seem to be incorrect.
This change updates these constants as per the HDMI and
the CEA-861D spec.

Change-Id: I526ce7bb5e6894e07040cc409c8a700e4a78a9fd
CRs-Fixed: 328553
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>