toolchain: gcc: Add GEN_ABSOLUTE_SYM definitions for OpenRISC

Existing versions of GEN_ABSOLUTE_SYM and GEN_ABSOLUTE_SYM_KCONFIG are
defined for all supported architectures. This patch adds a definition of
the same kind used for MIPS, Nios II, RISC-V and Xtensa.

Signed-off-by: Joel Holdsworth <[email protected]>

Author: jhol

include/zephyr/toolchain/gcc.h

@@ -552,7 +552,8 @@ do {                                                                    \
 		"\n\t.type\t" #name ",@object")
 
 #elif defined(CONFIG_NIOS2) || defined(CONFIG_RISCV) || \
-	defined(CONFIG_XTENSA) || defined(CONFIG_MIPS)
+	defined(CONFIG_XTENSA) || defined(CONFIG_MIPS) || \
+	defined(CONFIG_OPENRISC)
 
 /* No special prefixes necessary for constants in this arch AFAICT */
 #define GEN_ABSOLUTE_SYM(name, value)		\