NVIDIA Tegra APBMISC block

Required properties:
- compatible: Must be:
  - Tegra20: "nvidia,tegra20-apbmisc"
  - Tegra30: "nvidia,tegra30-apbmisc", "nvidia,tegra20-apbmisc"
  - Tegra114: "nvidia,tegra114-apbmisc", "nvidia,tegra20-apbmisc"
  - Tegra124: "nvidia,tegra124-apbmisc", "nvidia,tegra20-apbmisc"
  - Tegra132: "nvidia,tegra124-apbmisc", "nvidia,tegra20-apbmisc"
  - Tegra210: "nvidia,tegra210-apbmisc", "nvidia,tegra20-apbmisc"
- reg: Should contain 2 entries: the first entry gives the physical address
       and length of the registers which contain revision and debug features.
       The second entry gives the physical address and length of the
       registers indicating the strapping options.

Optional properties:
- nvidia,long-ram-code: If present, the RAM code is long (4 bit). If not, short (2 bit).