Having "i.MX7D/i.MX8MM SRC_GPR10 PERSIST_SECONDARY_BOOT for bootloader A/B
switching" at the top level of the documentation tree does not make sense.
Move it to board specific information.
Fixes: 
						
					
				
			 | 
			||
|---|---|---|
| .. | ||
| sdp.txt | ||
				
					
						
							Having "i.MX7D/i.MX8MM SRC_GPR10 PERSIST_SECONDARY_BOOT for bootloader A/B
switching" at the top level of the documentation tree does not make sense.
Move it to board specific information.
Fixes: 
						
					
				
			 | 
			||
|---|---|---|
| .. | ||
| sdp.txt | ||