target: move 'extern' decls to *.h files

The exception being declarations for drivers.  Those should
be split out in some clean way -- like driver add/remove calls
made by initialization code -- but that's for another day.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

src/target/arm.h

@@ -191,6 +191,13 @@ int armv4_5_run_algorithm(struct target *target,
 		int num_reg_params, struct reg_param *reg_params,
 		uint32_t entry_point, uint32_t exit_point,
 		int timeout_ms, void *arch_info);
+int armv4_5_run_algorithm_inner(struct target *target,
+		int num_mem_params, struct mem_param *mem_params,
+		int num_reg_params, struct reg_param *reg_params,
+		uint32_t entry_point, uint32_t exit_point,
+		int timeout_ms, void *arch_info,
+		int (*run_it)(struct target *target, uint32_t exit_point,
+				int timeout_ms, void *arch_info));
 
 int arm_checksum_memory(struct target *target,
 		uint32_t address, uint32_t count, uint32_t *checksum);
@@ -200,6 +207,8 @@ int arm_blank_check_memory(struct target *target,
 void arm_set_cpsr(struct arm *arm, uint32_t cpsr);
 struct reg *arm_reg_current(struct arm *arm, unsigned regnum);
 
+void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip);
+
 extern struct reg arm_gdb_dummy_fp_reg;
 extern struct reg arm_gdb_dummy_fps_reg;
 

src/target/arm7_9_common.c

@@ -2652,14 +2652,6 @@ static const uint32_t dcc_code[] =
 	0xeafffff9	/*    b   w                   */
 };
 
-extern int armv4_5_run_algorithm_inner(struct target *target,
-	int num_mem_params, struct mem_param *mem_params,
-	int num_reg_params, struct reg_param *reg_params,
-	uint32_t entry_point, uint32_t exit_point,
-	int timeout_ms, void *arch_info,
-	int (*run_it)(struct target *target, uint32_t exit_point,
-			int timeout_ms, void *arch_info));
-
 int arm7_9_bulk_write_memory(struct target *target, uint32_t address, uint32_t count, uint8_t *buffer)
 {
 	int retval;

src/target/arm9tdmi.c

@@ -269,8 +269,6 @@ int arm9tdmi_clock_data_in(struct arm_jtag *jtag_info, uint32_t *in)
 	return ERROR_OK;
 }
 
-extern void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip);
-
 static int arm9endianness(jtag_callback_data_t arg,
 	jtag_callback_data_t size, jtag_callback_data_t be,
 	jtag_callback_data_t captured)

src/target/armv7m.h

@@ -34,6 +34,12 @@
 #define ARMV7_GDB_HACKS
 #endif
 
+#ifdef ARMV7_GDB_HACKS
+extern uint8_t armv7m_gdb_dummy_cpsr_value[];
+extern struct reg armv7m_gdb_dummy_cpsr_reg;
+#endif
+
+
 enum armv7m_mode
 {
 	ARMV7M_MODE_THREAD = 0,

src/target/cortex_m3.c

@@ -52,11 +52,6 @@ static void cortex_m3_enable_watchpoints(struct target *target);
 static int cortex_m3_store_core_reg_u32(struct target *target,
 		enum armv7m_regtype type, uint32_t num, uint32_t value);
 
-#ifdef ARMV7_GDB_HACKS
-extern uint8_t armv7m_gdb_dummy_cpsr_value[];
-extern struct reg armv7m_gdb_dummy_cpsr_reg;
-#endif
-
 static int cortexm3_dap_read_coreregister_u32(struct swjdp_common *swjdp,
 		uint32_t *value, int regnum)
 {