cpu/arm7_common: Removed dead code

- Functions bl_uart_init(), bl_blink(), bl_config_init() declared but never
  implemented
    --> Removed declarations
- Check for c preprocessor macro CPU_MC1322X is obsolete, as CPU_MC1322X is
  nowhere defined in RIOT's code base
- IRQ_Routine() is never used, nor is it ever configured as ISR
- DEBUG_Routine() is never used, nor is it ever configured as ISR

cpu/arm7_common/bootloader.c

@@ -34,12 +34,6 @@ void FIQ_Routine(void)   __attribute__((interrupt("FIQ")));
 //void SWI_Routine (void)   __attribute__((interrupt("SWI")));
 void UNDEF_Routine(void) __attribute__((interrupt("UNDEF")));
 
-void IRQ_Routine(void)
-{
-    LOG_ERROR("Kernel Panic,\nEarly IRQ call\n");
-
-    while (1) {};
-}
 /*-----------------------------------------------------------------------------------*/
 void FIQ_Routine(void)
 {
@@ -55,13 +49,6 @@ void SWI_Routine(void)
     while (1) {};
 }
 /*-----------------------------------------------------------------------------------*/
-void DEBUG_Routine(void)
-{
-    LOG_ERROR("DEBUG hit.");
-
-    while (1) {};
-}
-/*-----------------------------------------------------------------------------------*/
 volatile int arm_abortflag = 0;
 
 void abtorigin(const char *vector, unsigned long *lnk_ptr1)
@@ -164,19 +151,14 @@ bl_init_data(void)
 /*-----------------------------------------------------------------------------------*/
 void bootloader(void)
 {
-    extern void bl_uart_init(void);
     extern void bl_init_ports(void);
     extern void bl_init_clks(void);
-    extern void bl_blink(void);
-    extern void bl_config_init(void);
 
     /* board specific setup of clocks */
     bl_init_clks();
 
     /* initialize bss and data */
-#ifndef CPU_MC1322X
     bl_init_data();
-#endif
 
     /* board specific setup of i/o pins */
     bl_init_ports();

cpu/arm7_common/common.s

@@ -33,7 +33,6 @@
   .extern  sched_active_thread
   .extern  sched_context_switch_request
   .extern  sched_run
-  .extern  DEBUG_Routine
 
 /* Public functions declared in this file */
   .global  arm_irq_handler