Small PICO_CONFIG tweak (earlephilhower#2456)

Author: lurch

src/rp2_common/pico_mbedtls/pico_mbedtls.c

@@ -33,7 +33,7 @@ int mbedtls_hardware_poll(void *data __unused, unsigned char *output, size_t len
 #error SHA256 hardware acceleration not supported
 #endif
 
-// PICO_CONFIG: PICO_MBEDTLS_SHA256_ALT_USE_DMA, Whether to use DMA for writing to hardware for the mbedtls SHA-256 hardware acceleration, type=int, default=1, group=pico_mbedtls
+// PICO_CONFIG: PICO_MBEDTLS_SHA256_ALT_USE_DMA, Whether to use DMA for writing to hardware for the mbedtls SHA-256 hardware acceleration, type=bool, default=1, group=pico_mbedtls
 #ifndef PICO_MBEDTLS_SHA256_ALT_USE_DMA
 #define PICO_MBEDTLS_SHA256_ALT_USE_DMA 1
 #endif