TWAI: Add ESP32-S2 support

This commit adds TWAI driver support for the
ESP32-S2. The following features were added:

- Expanded BRP support
- Expanded CLKOUT Divider Support
- Updated example READMEs

docs/_static/diagrams/twai/acceptance_filter_dual.diag

@@ -1,6 +1,6 @@
-#Diagram of CAN Controller Acceptance Filter (Dual) Configuration
+#Diagram of Acceptance Filter (Dual) Configuration
 
-packetdiag can_acceptance_filter_dual {
+packetdiag acceptance_filter_dual {
     node_width = 30
     node_height = 35
     default_fontsize = 15

docs/_static/diagrams/twai/acceptance_filter_single.diag

@@ -1,6 +1,6 @@
-#Diagram of CAN Controller Acceptance Filter (Single) Configuration
+#Diagram of Acceptance Filter (Single) Configuration
 
-packetdiag can_acceptance_filter_single {
+packetdiag acceptance_filter_single {
     node_width = 30
     node_height = 35
     default_fontsize = 15

docs/_static/diagrams/twai/bit_timing.diag

@@ -1,6 +1,6 @@
 #Example of bit timing configuration for 500KBPS
 
-packetdiag can_bit_timing_diag{
+packetdiag bit_timing_diag{
     node_width = 40
     node_height = 35
     default_fontsize = 15

docs/_static/diagrams/twai/controller_signals.diag

@@ -1,12 +1,12 @@
-#Diagram of CAN controller signal lines
+#Diagram of TWAI controller signal lines
 
-blockdiag can_controller_signals_diagram {
+blockdiag controller_signals_diagram {
     
     orientation = portrait;
     span_width = 80;
 
     #Column 1 nodes
-    can[label = "CAN Controller", fontsize = 15, shape = roundedbox];
+    twai[label = "TWAI Controller", fontsize = 15, shape = roundedbox];
 
     #Column 2 nodes
     tx[label = "TX", shape = endpoint];
@@ -25,7 +25,7 @@ blockdiag can_controller_signals_diagram {
         color = none;
 
         #Group column 1 nodes vertically
-        can;
+        twai;
     }
     group {
         orientation = portrait;
@@ -45,13 +45,13 @@ blockdiag can_controller_signals_diagram {
         hide1; hide2; hide3; hide4;
     }
 
-    can -> tx [folded];
-    can -> rx [folded];
-    can -> bus_off [folded];
-    can -> clkout [folded];
+    twai -> tx [folded];
+    twai -> rx [folded, dir = none];
+    twai -> bus_off [folded];
+    twai -> clkout [folded];
 
     tx -> hide1 [folded];
-    rx -> hide2 [folded];
+    rx <- hide2 [folded];
     bus_off -> hide3 [folded, label = "Optional"];
     clkout -> hide4 [folded, label = "Optional"];
 }

docs/_static/diagrams/twai/state_transition.diag

@@ -1,6 +1,6 @@
-#State transition diagram of the CAN Driver
+#State transition diagram of the TWAI Driver
 
-blockdiag can_state_transition_diagram {
+blockdiag state_transition_diagram {
 
     orientation = landscape;
     default_fontsize = 18;