ulp_load_binary() function

Load ULP program binary into RTC memory ULP program binary should have the following format (all values little-endian): 1. MAGIC, (value 0x00706c75, 4 bytes) 2. TEXT_OFFSET, offset of .text section from binary start (2 bytes) 3. TEXT_SIZE, size of .text section (2 bytes) 4. DATA_SIZE, size of .data section (2 bytes) 5. BSS_SIZE, size of .bss section (2 bytes) 6. (TEXT_OFFSET - 12) bytes of arbitrary data (will not be loaded into RTC memory) 7. .text section 8. .data section Linker script in components/ulp/ld/esp32.ulp.ld produces ELF files which correspond to this format. This linker script produces binaries with load_addr == 0.