dt-bindings: x86: apic: Convert Intel's APIC bindings to YAML schema

The DT bindings for X86 local APIC (lapic) and I/O APIC (ioapic) are
outdated. Rework them:

   - Convert the bindings for lapic and ioapic from text to YAML schema.
   - Separate lapic & ioapic schemas.
   - Add missing but required standard properties
   - Add missing descriptions

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rahul Tanwar <rtanwar@maxlinear.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221124084143.21841-2-rtanwar@maxlinear.com