Use case insensitive comparison for the machine's architechture

boot loader specification states:

architecture: refers to the architecture this entry is for. The argument
should be an architecture identifier, using the architecture vocabulary
defined by the EFI specification (i.e. IA32, x64, IA64, ARM, AA64, …).
If specified and it does not match the local system architecture this
entry should be hidden. The comparison should be done case-insensitively.

Example: architecture aa64

https://uapi-group.org/specifications/specs/boot_loader_specification/#type-1-boot-loader-entry-keys
(cherry picked from commit f819a51)
(cherry picked from commit d65b742)
(cherry picked from commit 129c30b)
(cherry picked from commit a4577e3)

Author: Daniel Martinez

src/boot/efi/boot.c

@@ -1491,7 +1491,7 @@ static void config_entry_add_type1(
 
                 if (streq8(key, "architecture")) {
                         /* do not add an entry for an EFI image of architecture not matching with that of the image */
-                        if (!streq8(value, EFI_MACHINE_TYPE_NAME)) {
+                        if (!strcaseeq8(value, EFI_MACHINE_TYPE_NAME)) {
                                 entry->type = LOADER_UNDEFINED;
                                 break;
                         }