llext: linker: use INFO type instead of COPY

COPY and INFO are different names for the same Output Section Type,
but the latter is easier to understand in the context we are using it.

Replace COPY with INFO in the LLEXT linker script snippet.

Signed-off-by: Mathieu Choplain <mathieu.choplain-ext@st.com>

Author: mathieuchopstm

include/zephyr/linker/llext-sections.ld

@@ -16,7 +16,7 @@
 	 * This section is used for mapping that symbol only and is not
 	 * to be included in the final binary.
 	 */
-	SECTION_PROLOGUE(llext_no_syscall_impl, 0 (COPY), )
+	SECTION_PROLOGUE(llext_no_syscall_impl, 0 (INFO), )
 	{
 	  *(llext_no_syscall_impl)
 	}
@@ -33,7 +33,7 @@
 	 * strictly equivalent to the offset inside the section.
 	 */
 #ifdef CONFIG_LLEXT_EXPORT_BUILTINS_BY_SLID
-	SECTION_PROLOGUE(llext_exports_strtab, 0 (COPY), )
+	SECTION_PROLOGUE(llext_exports_strtab, 0 (INFO), )
 	{
 	  KEEP(*(llext_exports_strtab))
 	}