In examples, allow the static_mut_refs lint

For the future, need to investigate:
* How to implement DMA without requiring the lifetime of the buffer to be
'static
* How to specific the link_section of non-static buffers

Author: richardeoin

examples/dma.rs

@@ -1,6 +1,7 @@
 //! Example of Memory to Memory Transfer with the DMA
 
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/ethernet-nucleo-h743zi2.rs

@@ -9,6 +9,7 @@
 //! This demo does not use smoltcp - see the ethernet-rtic-stm32h747i-disco demo
 //! for an example of smoltcp
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/ethernet-rtic-nucleo-h723zg.rs

@@ -12,6 +12,7 @@
 //!
 //! `cargo flash --example ethernet-rtic-nucleo-h723zg --features=ethernet,stm32h735 --chip=STM32H723ZGTx`
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/ethernet-rtic-stm32h735g-dk.rs

@@ -8,6 +8,7 @@
 //! The ethernet ring buffers are placed in AXI SRAM, where they can be
 //! accessed by both the core and the Ethernet DMA.
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/ethernet-rtic-stm32h747i-disco.rs

@@ -15,6 +15,7 @@
 //! The ethernet ring buffers are placed in SRAM3, where they can be
 //! accessed by both the core and the Ethernet DMA.
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/ethernet-stm32h747i-disco.rs

@@ -8,6 +8,7 @@
 //! This demo does not use smoltcp - see the ethernet-rtic-stm32h747i-disco demo
 //! for an example of smoltcp
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/i2c4_bdma.rs

@@ -3,6 +3,7 @@
 //!
 
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_std]
 #![no_main]
 

examples/mdma.rs

@@ -1,6 +1,7 @@
 //! Example of Memory to Memory Transfer with the Master DMA (MDMA)
 
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/mdma_bursts.rs

@@ -6,6 +6,7 @@
 //! beats/burst. The latter gives an approximately 25% speedup.
 
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]
 

examples/sai_dma_passthru.rs

@@ -3,6 +3,7 @@
 
 #![allow(unused_macros)]
 #![deny(warnings)]
+#![allow(static_mut_refs)]
 #![no_main]
 #![no_std]