Add kernel drivers for SPI and UART and make locking APIs more consistent (#489)

- Add kernel support for SPI driver
- Add kernel support for UART driver
- Implemented ESP32 UART kernel driver
- Update existing UART-related code in Tactility to use new kernel driver
- Remove UART from tt::hal::Configuration
- Remove tt_hal_uart functionality but keep functions for now
- Update devicetrees for UART changes
- Kernel mutex and recursive mutex: improved locking API design
- Other kernel improvements
- Added device_exists_of_type() and device_find_by_name()

Devices/m5stack-cardputer/Source/Configuration.cpp

@@ -3,6 +3,7 @@
 #include "devices/CardputerEncoder.h"
 #include "devices/CardputerKeyboard.h"
 #include "devices/CardputerPower.h"
+#include <driver/gpio.h>
 
 #include <PwmBacklight.h>
 #include <Tactility/hal/Configuration.h>
@@ -10,7 +11,7 @@
 
 using namespace tt::hal;
 
-bool initBoot() {
+static bool initBoot() {
     return driver::pwmbacklight::init(LCD_PIN_BACKLIGHT, 512);
 }
 
@@ -78,30 +79,5 @@ extern const Configuration hardwareConfiguration = {
             .lock = nullptr
         },
 
-    },
-    .uart {
-        uart::Configuration {
-            .name = "Port A",
-            .port = UART_NUM_1,
-            .rxPin = GPIO_NUM_2,
-            .txPin = GPIO_NUM_1,
-            .rtsPin = GPIO_NUM_NC,
-            .ctsPin = GPIO_NUM_NC,
-            .rxBufferSize = 1024,
-            .txBufferSize = 1024,
-            .config = {
-                .baud_rate = 115200,
-                .data_bits = UART_DATA_8_BITS,
-                .parity    = UART_PARITY_DISABLE,
-                .stop_bits = UART_STOP_BITS_1,
-                .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
-                .rx_flow_ctrl_thresh = 0,
-                .source_clk = UART_SCLK_DEFAULT,
-                .flags = {
-                    .allow_pd = 0,
-                    .backup_before_sleep = 0,
-                }
-            }
-        }
     }
 };