efi_loader: use INCLUDE in EFI linker scripts

Except for the architecture specific lines ARM and RISC-V can use the same
linker script. Move the common lines to an include.

Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/lib/efi_loader/elf_efi.ldsi b/lib/efi_loader/elf_efi.ldsi
new file mode 100644
index 0000000..190a88f
--- /dev/null
+++ b/lib/efi_loader/elf_efi.ldsi
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * U-Boot EFI linker script include
+ *
+ * Modified from elf_aarch64_efi.lds in gnu-efi
+ */
+
+PHDRS
+{
+	data PT_LOAD FLAGS(3); /* SHF_WRITE | SHF_ALLOC */
+}
+
+ENTRY(_start)
+SECTIONS
+{
+	.text 0x0 : {
+		_text = .;
+		*(.text.head)
+		*(.text)
+		*(.text.*)
+		*(.gnu.linkonce.t.*)
+		*(.srodata)
+		*(.rodata*)
+		. = ALIGN(16);
+		*(.dynamic);
+		. = ALIGN(512);
+	}
+	.rela.dyn : { *(.rela.dyn) }
+	.rela.plt : { *(.rela.plt) }
+	.rela.got : { *(.rela.got) }
+	.rela.data : { *(.rela.data) *(.rela.data*) }
+	. = ALIGN(4096);
+	_etext = .;
+	_text_size = . - _text;
+	.data : {
+		_data = .;
+		*(.sdata)
+		*(.data)
+		*(.data1)
+		*(.data.*)
+		*(.got.plt)
+		*(.got)
+
+		/*
+		 * The EFI loader doesn't seem to like a .bss section, so we
+		 * stick it all into .data:
+		 */
+		. = ALIGN(16);
+		_bss = .;
+		*(.sbss)
+		*(.scommon)
+		*(.dynbss)
+		*(.bss)
+		*(.bss.*)
+		*(COMMON)
+		. = ALIGN(512);
+		_bss_end = .;
+		_edata = .;
+	} :data
+	_data_size = _edata - _data;
+
+	. = ALIGN(4096);
+	.dynsym   : { *(.dynsym) }
+	. = ALIGN(4096);
+	.dynstr   : { *(.dynstr) }
+	. = ALIGN(4096);
+	.note.gnu.build-id : { *(.note.gnu.build-id) }
+	/DISCARD/ : {
+		*(.rel.reloc)
+		*(.eh_frame)
+		*(.note.GNU-stack)
+	}
+	.comment 0 : { *(.comment) }
+}