build(deps): bump riscv from 0.11.1 to 0.12.1

[dependabot]

Bumps riscv from 0.11.1 to 0.12.1.

Release notes

Sourced from riscv's releases.

riscv 0.12.0

New features

riscv 0.12.0

• Support for target-dependent external interrupt and exception numbers
• riscv-macros for helping during the definition of custom interrupt and exception sources
• Macros for automating the definition of new CSRs

riscv-pac 0.2.0

• Enumeration of common errors for RISC-V targets at the register level
• All PAC traits now work with usize numbers
• New ExceptionNumber trait for custom exception numbers

riscv-peripheral 0.2.0

• Adapt to new changes in the RISC-V ecosystem

riscv-rt 0.13.0

• Now exceptions rely on the _dispatch_exception function
• Now interrupts rely on the _dispatch_interrupt function
• While the crate provides a default implementation for the previously mentioned functions, you can skip these functions with the new no-exceptions and no-interrupts features. This way, you can adapt riscv-rt to target-specific sources.
• New pre_init_trap to detect early errors during the boot process.
• Vectored interrupts handling is now available under the v-trap feature!
• New core_interrupt, external_interrupt, and exception macros for defining interrupt and exception handlers
• New u-boot feature to execute U-boot binaries.

Commits

• See full diff in compare view

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[mkroening]

@dependabot recreate

[dependabot]

Looks like riscv is no longer a dependency, so this is no longer needed.