sparc: Build fixes

- Wrong printf format in bootloader elf panic call
- Missing functions for sparc

Change-Id: I4715a8d6d3d864d379b8386dc3958e0a2c1962e7
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3571
Reviewed-by: waddlesplash <[email protected]>

src/system/boot/loader/elf.cpp

@@ -152,7 +152,7 @@ struct ELF64Class {
 #else
 		void *result;
 		if (platform_kernel_address_to_bootloader_address(address, &result) != B_OK) {
-			panic("Couldn't convert address %#lx", address);
+			panic("Couldn't convert address %#" PRIx64, address);
 		}
 		return result;
 #endif

src/system/boot/platform/openfirmware/mmu.cpp

@@ -28,6 +28,22 @@ platform_allocate_region(void **_address, size_t size, uint8 protection,
 }
 
 
+extern "C" status_t
+platform_bootloader_address_to_kernel_address(void *address, addr_t *_result)
+{
+	*_result = (addr_t)address;
+	return B_OK;
+}
+
+
+extern "C" status_t
+platform_kernel_address_to_bootloader_address(addr_t address, void **_result)
+{
+	*_result = (void*)address;
+	return B_OK;
+}
+
+
 status_t
 platform_free_region(void *address, size_t size)
 {