ch11-fledgeos-0 not building. Fix provided. Error: feature(const_fn) has been removed

[AtulJatia]

Errors:

1. feature = "const_fn", feature(const_fn) has been removed
2. cannot find macro asm in this scope

Steps to fix:

1. Clear the cargo cache so that the old dependencies are not picked up (can use this cargo-cache crate, or google this up).
2. Update the following packages to the new versions as specified below.

[dependencies]
bootloader = "0.9.22"
x86_64 = "0.14.10"

3. Code should build and run as expected.

[Silwings-git]

Thank you

[yf8155674]

Thank you, it's work.