nvs_flash: make nvs_flash_init usable for Linux target

Since the partition API is now supported for Linux target builds,
this function can now be used.

components/nvs_flash/src/nvs_api.cpp

@@ -116,7 +116,7 @@ extern "C" esp_err_t nvs_flash_init_partition_ptr(const esp_partition_t *partiti
     return init_res;
 }
 
-#ifndef LINUX_TARGET
+#ifndef LINUX_HOST_LEGACY_TEST
 extern "C" esp_err_t nvs_flash_init_partition(const char *part_name)
 {
     esp_err_t lock_result = Lock::init();
@@ -239,7 +239,7 @@ extern "C" esp_err_t nvs_flash_erase(void)
 {
     return nvs_flash_erase_partition(NVS_DEFAULT_PART_NAME);
 }
-#endif // ! LINUX_TARGET
+#endif // LINUX_HOST_LEGACY_TEST
 
 extern "C" esp_err_t nvs_flash_deinit_partition(const char* partition_name)
 {

components/nvs_flash/test_nvs_host/Makefile

@@ -39,8 +39,8 @@ COMPILER := gcc
 endif
 
 CPPFLAGS += -I../private_include -I../include -I../src -I../../esp_rom/include -I../../esp_rom/include/linux -I../../log/include -I./ -I../../esp_common/include -I../../esp32/include -I ../../mbedtls/mbedtls/include -I ../../spi_flash/include -I ../../hal/include -I ../../xtensa/include -I ../../../tools/catch -fprofile-arcs -ftest-coverage -g2 -ggdb
-CFLAGS += -fprofile-arcs -ftest-coverage -DLINUX_TARGET
-CXXFLAGS += -std=c++11 -Wall -Werror -DLINUX_TARGET
+CFLAGS += -fprofile-arcs -ftest-coverage -DLINUX_TARGET -DLINUX_HOST_LEGACY_TEST
+CXXFLAGS += -std=c++11 -Wall -Werror -DLINUX_TARGET -DLINUX_HOST_LEGACY_TEST
 LDFLAGS += -lstdc++ -Wall -fprofile-arcs -ftest-coverage
 
 ifeq ($(COMPILER),clang)