partition_table: fix generation of signed partition table

Fixes the issue that signed partition table was not generated when
CONFIG_SECURE_BOOT_BUILD_SIGNED_BINARIES was on, because
partition_table_bin depended on unsigned_partition_bin twice.
Regression from acb7a211.

Also use final_partition_bin variable in esptool_py_flash_target_image
arguments, to avoid issues in the future if final_partition_bin is
changed.

components/partition_table/CMakeLists.txt

@@ -51,7 +51,7 @@ add_custom_command(OUTPUT "${build_dir}/partition_table/${unsigned_partition_bin
     VERBATIM)
 
 add_custom_target(partition_table_bin DEPENDS "${build_dir}/partition_table/${unsigned_partition_bin}"
-                                              "${build_dir}/partition_table/${unsigned_partition_bin}")
+                                              "${build_dir}/partition_table/${final_partition_bin}")
 
 if(EXISTS ${partition_csv})
     add_custom_target(partition_table
@@ -100,7 +100,7 @@ idf_component_get_property(sub_args esptool_py FLASH_SUB_ARGS)
 if(CONFIG_APP_BUILD_GENERATE_BINARIES)
     esptool_py_flash_target(partition_table-flash "${main_args}" "${sub_args}")
     esptool_py_flash_target_image(partition_table-flash partition_table "${PARTITION_TABLE_OFFSET}"
-                                        "${build_dir}/partition_table/partition-table.bin")
+                                        "${build_dir}/partition_table/${final_partition_bin}")
     esptool_py_flash_target_image(flash partition_table "${PARTITION_TABLE_OFFSET}"
-                                        "${build_dir}/partition_table/partition-table.bin")
+                                        "${build_dir}/partition_table/${final_partition_bin}")
 endif()