core: plat-bcm: remove virtual address lookup from main_init_gic()

- Commit 6080169 ("plat: arm: refactor GIC initialization")
  refactored GIC initialization to have gic_init_base_addr() take in a
  physical address instead of a virtual one, meaning that a virtual
  address lookup is no longer necessary within a platform's gic_init().
- BCM's main_init_gic() would still perform a virtual memory lookup and
  hand over its virtual address instead of the expected physical one.
  This caused the lookup in gic_init_base_addr() to fail and panic.
- This new commit removes the virtual memory lookup from BCM's
  main_gic_init() and instead hands gic_init_base_addr() a physical
  address.

Signed-off-by: Andrew Mustea <andrew.mustea@microsoft.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

core/arch/arm/plat-bcm/main.c

@@ -81,14 +81,6 @@ void itr_core_handler(void)
 
 void main_init_gic(void)
 {
-	vaddr_t gicd_base;
-
-	gicd_base = core_mmu_get_va(GICD_BASE, MEM_AREA_IO_SEC, 1);
-
-	if (!gicd_base)
-		panic();
-
-	gic_init_base_addr(&gic_data, 0, gicd_base);
+	gic_init_base_addr(&gic_data, 0, GICD_BASE);
 	itr_init(&gic_data.chip);
-
 }