tinyuf2 adopted the partition scheme called "1ota"

.. which irritated our partition table parser in build_memory_info, so
make it work again.

Author: jepler

ports/espressif/boards/adafruit_esp32s3_camera/mpconfigboard.mk

@@ -8,7 +8,7 @@ IDF_TARGET = esp32s3
 CIRCUITPY_ESP_FLASH_MODE = dio
 CIRCUITPY_ESP_FLASH_FREQ = 40m
 CIRCUITPY_ESP_FLASH_SIZE = 4MB
-FLASH_SDKCONFIG = esp-idf-config/sdkconfig-4MB-no-ota.defaults
+FLASH_SDKCONFIG = esp-idf-config/sdkconfig-4MB-1ota.defaults
 
 CIRCUITPY_AUDIOBUSIO = 0
 CIRCUITPY_CANIO = 0

ports/espressif/esp-idf-config/partitions-4MB-1ota.csv

@@ -0,0 +1,10 @@
+# ESP-IDF Partition Table
+# Name,   Type, SubType, Offset,  Size, Flags
+# bootloader.bin,,          0x1000, 32K
+# partition table,          0x8000, 4K
+
+nvs,      data, nvs,      0x9000,  20K,
+otadata,  data, ota,      0xe000,  8K,
+ota_0,    app,  ota_0,   0x10000,  2816K,
+uf2,      app,  factory,0x2d0000,  256K,
+ffat,     data, fat,    0x310000,  960K,

ports/espressif/esp-idf-config/partitions-4MB-no-ota.csv

@@ -10,9 +10,9 @@ CONFIG_ESPTOOLPY_FLASHSIZE="4MB"
 CONFIG_ESPTOOLPY_FLASHSIZE_DETECT=y
 # end of Serial flasher config
 
-CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="esp-idf-config/partitions-4MB-no-ota.csv"
+CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="esp-idf-config/partitions-4MB-1ota.csv"
 #
 # Partition Table
 #
-CONFIG_PARTITION_TABLE_FILENAME="esp-idf-config/partitions-4MB-no-ota.csv"
+CONFIG_PARTITION_TABLE_FILENAME="esp-idf-config/partitions-4MB-1ota.csv"
 # end of Partition Table

ports/espressif/esp-idf-config/sdkconfig-4MB-no-ota.defaults renamed to ports/espressif/esp-idf-config/sdkconfig-4MB-1ota.defaults

@@ -73,7 +73,9 @@ def find_region(start_address):
                 ota = None
                 app = None
                 for partition in csv.reader(f):
-                    if partition[0][0] == "#":
+                    if not partition:  # empty row
+                        continue
+                    if partition[0].startswith("#"):
                         continue
                     subtype = partition[2].strip()
                     if subtype == "factory":