imgtec/pistachio: Add SOC_REGISTERS memory region

When used with a U-boot payload it will need this region
identity mapped also, so we're defining it in preparation
for that functionality.

Change-Id: I27cee5b58cb899433b52bd06df07b5f2105212af
Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
Reviewed-on: https://review.coreboot.org/12768
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/src/include/symbols.h b/src/include/symbols.h
index aa055ec..662f44e 100644
--- a/src/include/symbols.h
+++ b/src/include/symbols.h
@@ -72,6 +72,10 @@
 extern u8 _edma_coherent[];
 #define _dma_coherent_size (_edma_coherent - _dma_coherent)
 
+extern u8 _soc_registers[];
+extern u8 _esoc_registers[];
+#define _soc_registers_size (_esoc_registers - _soc_registers)
+
 extern u8 _framebuffer[];
 extern u8 _eframebuffer[];
 #define _framebuffer_size (_eframebuffer - _framebuffer)