C - Omit struct in hierarchy for blocks with block-prefix: False

[stefanlippuner]

👋

This is a small change to adapt the C struct output to match the other outputs more closely in case block-prefix: False is defined for a block. E.g. The C defines for the register address already omit the name of the block in this case.

It turns this output

#ifndef __ASSEMBLER__
struct my_reg {

  /* [0x4]: BLOCK Interrupt registers */
  struct irq_regs {
    /* [0x0]: REG (ro) Interrupt status. */
    uint32_t irq_status;

    /* [0x4]: REG (rw) Interrupt enable. */
    uint32_t irq_enable;
  } irq_regs;

into this:

#ifndef __ASSEMBLER__
struct my_reg {
  /* [0x4]: BLOCK Interrupt registers */
  /* [0x0]: REG (ro) Interrupt status. */
  uint32_t irq_status;

  /* [0x4]: REG (rw) Interrupt enable. */
  uint32_t irq_enable;

Let me know if I should add a testcase for this.

[tgingold-cern]

Yes, it is always nice to add a testcase, to avoid regressions.

[stefanlippuner]

I've added the existing blkprefix3 testcase to also generate a C header file. I also wanted to enable blkprefix4 but that fails to compile because it's missing a different header file.

[tgingold-cern]

Great. Thanks!