hatch_fp: fix memory mapping of FP buffers
On STM32F412 the buffers are located in the regular SRAM, don't define a
special section.
BRANCH=None
TEST=fpenroll+fpmatch
* (shared_mem_init done too late).
*/
#define CONFIG_MALLOC
-/* Special memory regions to store large arrays */
-#define FP_FRAME_SECTION __SECTION(ahb4)
-#define FP_TEMPLATE_SECTION __SECTION(ahb)
+/*
+ * FP buffers are allocated in regular SRAM on STM32F4.
+ * TODO(b/124773209): Instead of defining to empty, #undef once all CLs that
+ * depend on FP_*_SECTION have landed. Also rename the variables to CONFIG_*.
+ */
+#define FP_FRAME_SECTION
+#define FP_TEMPLATE_SECTION
#else /* SECTION_IS_RO */
/* RO verifies the RW partition signature */
