Support dcc console

[vabbarap]

I added the dcc console in the ATF code in the below path
"drivers/arm/dcc/dcc_console.c"
static inline uint32_t __dcc_getstatus(void)
{
uint32_t ret;
asm volatile("mrs %0, mdccsr_el0" : "=r" (ret));
return ret;
}
int32_t console_core_putc(int32_t ch, unsigned long base_addr)
{
while (__dcc_getstatus() & DCC_STATUS_TX)
;
__dcc_putchar(ch);
return ch;
}
int32_t console_core_getc(unsigned long base_addr)
{
while (!(__dcc_getstatus() & DCC_STATUS_RX))
;
return __dcc_getchar();
}
static inline void __dcc_putchar(char c)
{
/*

• The typecast is to make absolutely certain that 'c' is
• zero-extended.
  */
  asm volatile("msr dbgdtrtx_el0, %0"
  : : "r" ((unsigned long)(unsigned char)c));
  isb();
  }

And i just included the "drivers/console/aarch64/deprecated_console.S"
which has the console_core_init and console_core_putc etc function calls.

But now i upgraded the ATF to V2.2 and i see the console architecture got changed a lot.
Could you please let me know if i want to port the DCC console to the ATF V2.2 what are the changes need to be done?

Thanks
Venkatesh

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