Revert "mach-msm: mdm: Wait for 30 seconds on first boot"

This reverts commit 138a3af6450912520722aaeac2f9b257fd28921f.
usb: Add more (OTG) fixes from Samsung

Change-Id: Ifb560cbc1b830f6034876ce7c04f0c941b3e7202
msm: mdm: Add timeouts for boot and ramdump

Use wait_for_completion_timeout() instead of wait_for_completion()
in the mdm SSR powerup and ramdumps callback functions to guard
against an indefinite hang should the userspace program become
unresponsive.

Change-Id: Ib99bd4a6b32483fbadb1aaa1ffc37b20e90d2985