Fixed autogen script when no user input for profile IDs (#259)

# Preface

Please ensure you have read the [contribution
docs](https://github.com/microsoft/mu/blob/master/CONTRIBUTING.md) prior
to submitting the pull request. In particular,
[pull request
guidelines](https://github.com/microsoft/mu/blob/master/CONTRIBUTING.md#pull-request-best-practices).

## Description

The previous change of adding profile ID into the autogenerated headers
caused the build to break when there is no input for this parameter
supplied: microsoft/mu_tiano_platforms#723.

This change added the corresponding edge case handling and updated the
autogenerated header formatting so that the output is self-consistent
instead of strictly following the user input.

For each item, place an "x" in between `[` and `]` if true. Example:
`[x]`.
_(you can also check items in the GitHub UI)_

- [x] Impacts functionality?
- **Functionality** - Does the change ultimately impact how firmware
functions?
- Examples: Add a new library, publish a new PPI, update an algorithm,
...
- [ ] Impacts security?
- **Security** - Does the change have a direct security impact on an
application,
    flow, or firmware?
  - Examples: Crypto algorithm change, buffer overflow fix, parameter
    validation improvement, ...
- [ ] Breaking change?
- **Breaking change** - Will anyone consuming this change experience a
break
    in build or boot behavior?
- Examples: Add a new library class, move a module to a different repo,
call
    a function in a new library class in a pre-existing module, ...
- [ ] Includes tests?
  - **Tests** - Does the change include any explicit test code?
  - Examples: Unit tests, integration tests, robot tests, ...
- [ ] Includes documentation?
- **Documentation** - Does the change contain explicit documentation
additions
    outside direct code modifications (and comments)?
- Examples: Update readme file, add feature readme file, link to
documentation
    on an a separate Web page, ...

## How This Was Tested

This was tested on the top of QEMU Q35 platform and confirmed building
and booting to shell.

## Integration Instructions

N/A

SetupDataPkg/Tools/KnobService.py

@@ -1173,10 +1173,12 @@ def generate_profiles(schema, profile_header_path, profile_paths, efi_type, prof
             out.write("};" + get_line_ending(efi_type))
             out.write(get_line_ending(efi_type))
             if profile_ids is not None:
-                ids_list = profile_ids
+                ids_iter = profile_ids
             else:
                 # If not specified, the indices will be the default profile ids
-                ids_list = [format(i, '02x') for i in range(len(profile_paths))]
+                ids_iter = range(len(profile_paths))
+
+            ids_list = ['0x' + format(i, '02x') for i in ids_iter]
 
             out.write(get_line_ending(efi_type))
             out.write(get_type_string("uint8_t", efi_type) + " g{}[PROFILE_COUNT]".format(
@@ -1328,7 +1330,9 @@ def main():
                         sys.stderr.write('Invalid profile id value 0x%x, should be 1-byte hexadecimal number. \n'
                                          % profileid)
                         return -1
-                    formatted_profile_ids.append(hex(profileid))
+                    formatted_profile_ids.append(profileid)
+            else:
+                formatted_profile_ids = None
 
             generate_profiles(schema, profile_header_path, profile_paths, efi_type,
                               profile_names=known_args.profile_names, profile_ids=formatted_profile_ids)