sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

Add mode selection to iMX6 IPU driver

- Configure ipu1_di0 tob e sourced from the VIDEO_PLL(PLL5) and hardcode
frequency to (455000000/3)Mhz. This value, further divided, can yield
frequencies close enough to support 1080p, 720p, 1024x768, and 640x480
modes. This is not ideal but it's an improvement comparing to the only
hardcoded 1024x768 mode.

- Fix memory leaks if attach method failed
- Print EDID when -v passed to the kernel

Add a SPI driver for imx5 and imx6.

It can be compiled into the kernel with "device imx_spi" or loaded as a
module, which is also named "imx_spi".

Add an ahci driver for imx6.

This was submitted by Rogiel Sulzbach (thank you!) but has a few last-minute
changes by me, mostly where the code interfaces to my still-utterly-deficient
imx6_ccm clocks implementation. So blame me for any mistakes.

Submitted by: Rogiel Sulzbach <rogiel@rogiel.com>
Differential Revision: https://reviews.freebsd.org/D11177

Add CCM functions to enable HDMI framer and IPU units (video controller)

Reviewed by: andrew, ian
Differential Revision: https://reviews.freebsd.org/D4168

Add the code necessary to run the imx6 chip at its lowest clock/power
operating point (396MHz/950mV).

Add support for audio transmitting, include drivers for:
o Digital Audio Multiplexer (AUDMUX)
o Smart Direct Memory Access Controller (SDMA)
o Synchronous Serial Interface (SSI)

Disable by default as it depends on SDMA firmware.

Sponsored by: Machdep, Inc.

Add a function to get the frequency of the AHB bus. Another stopgap
function until we have full clock support for imx6.

Stop calling imx51_ccm_foo() clock functions from imx6 code. Instead
define a few imx_ccm_foo() functions that are implemented by the imx51 or
imx6 ccm code. Of course, the imx6 ccm code is still more a wish than
reality, so for now its implementations just return hard-coded numbers.