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f919336448
In some cases we will need the dma's buffer to be aligned with specific requirements. This MR add two helper function to split the unaligned buffer and merge to the origin buffer. The cost is that each unaligned buffer requires two stash buffers of spilt alignment size. And this memory should be managed by callers.
| Supported Targets | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
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