Signed-off-by: Anton Glukhov <anton.a.glukhov@gmail.com>

Signed-off-by: Anton Glukhov <anton.a.glukhov@gmail.com>

add missing ReadFlash(optional) function

TI names their sections with a `:`. For example,
`.text:Fapi_issueAsyncCommand`. Add this as a recognized section prefix when
placing symbols into the text section.

Signed-off-by: Sean Cross <sean@xobs.io>

With big endian devices, the symbols are stored in big endian order. This is
fine if the header is getting loaded onto the target, however the header is
only for use with the host system, which is almost alays little endian.

Ensure each field of the header is correctly swapped by adding `.to_le()` to
each field. Additionally, ensure all fields are primitive integer types, as
byte swapping is undefined for Rust types.

Signed-off-by: Sean Cross <sean@xobs.io>

Add big endian support

Add a command to perform a blank check on a device. This is an alternate
method for devices that have ECC, where a blank device doesn't necessarily
have a predetermined or homogenous bit pattern.

Signed-off-by: Sean Cross <sean@xobs.io>

add blank_check command

CMSIS-DAP has a `BlankCheck` function available that is very close to the
`blank_check` function already. Add a `u8` argument that describes a
`pattern` in order to bring them up to parity.

Signed-off-by: Sean Cross <sean@xobs.io>