drivers/mmcsd: Rename mmcsd_read_csd to mmcsd_read_extcsd

[gneworld]

Summary

Rename mmcsd_read_csd to mmcsd_read_extcsd, since it really read extcsd register not csd register and remove the temp buffer inside it.

Impact

mmcsd

Testing

cortex m55

[nuttxpr]

[Experimental Bot, please feedback here]

No, this PR does not fully meet the NuttX requirements.

Missing Information:

• Summary:
  • Why is this change necessary? What is the problem with the current naming and buffer usage?
  • How does removing the temporary buffer work? What are the implications for memory usage and performance?
• Impact:
  • Be specific about which architectures, boards, or drivers are affected.
  • Impact on user: Will any user-facing APIs change?
  • Impact on compatibility: Are there any backward compatibility concerns?
• Testing:
  • Provide more details about your build host and target environments:
    • OS versions
    • Compiler versions
    • Specific ARM board model
  • Testing logs: The provided logs are placeholders. Please include actual logs showing the behavior before and after the change.

Recommendations:

• Expand the "Summary" section to clearly articulate the problem, solution, and rationale behind the changes.
• Provide specific details in the "Impact" section, addressing all points with concrete information.
• Replace placeholder testing logs with real output from your testing environment.

[xiaoxiang781216]

let's ignore the ci error which is fixed by #13717 to avoid wasting the ci resource:

100  496k  100  496k    0     0  2326k      0 --:--:-- --:--:-- --:--:-- 2326k
common/xtensa_cpupause.c: In function 'xtensa_pause_handler':
Error: common/xtensa_cpupause.c:240:3: error: implicit declaration of function 'xtensa_savestate'; did you mean 'xtensa_setps'? [-Werror=implicit-function-declaration]
  240 |   xtensa_savestate(tcb->xcp.regs);
      |   ^~~~~~~~~~~~~~~~
      |   xtensa_setps
Error: common/xtensa_cpupause.c:243:3: error: implicit declaration of function 'xtensa_restorestate'; did you mean 'xtensa_context_restore'? [-Werror=implicit-function-declaration]
  243 |   xtensa_restorestate(tcb->xcp.regs);
      |   ^~~~~~~~~~~~~~~~~~~
      |   xtensa_context_restore
cc1: all warnings being treated as errors