usb: gadget: mass_storage: added sysfs entry for cdrom to LUNs

This patch adds a "cdrom" sysfs entry for each mass_storage LUN, just
like "ro" sysfs entry. This allows switching between USB and CD-ROM
emulation without reinserting the module or recompiling the kernel.

Change-Id: Idf83c74815b1ad370428ab9d3e5503d5f7bcd3b6
m7 / dlx: fix USB OTG host mode

Change-Id: I38676e5384675abcfb04bd99b7537e60eef6c643
dlx: re-introduce PANEL_ID_DLX_SONY_RENESAS support

I added esc_byte_ratio = 2 for this panel, even though it wasn't
defined based on this code in the original HTC DLX kernel:

    #ifdef CONFIG_MSM_ALT_DSI_ESCAPE_CLOCK
          esc_byte_ratio = pinfo->mipi.esc_byt
    #else
          esc_byte_ratio = 2;
    #endif

Otherwise, it is a composite of the M7 Sony panel (for new fields
that have been added) and the panel that was in chad's kernel
based on the DLX source drop.

Change-Id: I2db2485a3770b7f469469537ebfb72d8c587dca4
derp

Change-Id: I1ffe99591bc173098c14a5822dcfaf36fdb05882
sound: don't enable debug by default

This removes a large number of messages that used to be printed
during audio playback making the log much easier to use.

Change-Id: I67822a11755a098f22c672784a6667c4abc45507