Converted the old STM32 headers to new style and copied offsets to
platform data.

Signed-off-by: Karl Palsson <karlp@tweak.net.au>

Backup registers are just hardcoded to 32, which is the max seen.
Note that the STM32WB only has 20!  I've captured that in the platform
yaml, even though it's not used anywhere (yet?)

Signed-off-by: Karl Palsson <karlp@tweak.net.au>

Includes the f4, l0 and wb.  f4 renames MEMRM to MEMRMP to be both
consistent with other parts and consistent with ref man.

Retested on the WB, but l0 and f4 code was simply moved.
For yaml files, given how varied syscfg is, we default to using the
family name as the type, but still allow overriding via explicit type in
the yaml file if desired.

Signed-off-by: Karl Palsson <karlp@tweak.net.au>

Basic registers to start with, a lot of commonality, but extra registers
on the WB.

Signed-off-by <karlp@tweak.net.au>

Not sure if "wpan" is the right directory for them, but they didn't feel
like they warranted their own directory each.

Signed-off-by: Karl Palsson <karlp@tweak.net.au>

No helpers, just the register map.

Signed-off-by: Karl Palsson <karlp@tweak.net.au>

Makes merging and diffing easier later.