gitignore: Append *.so and *.efi

EFI loader generates two types of binaries that usually are not a part of source tree. Ignore them globally based on extension.

---
 .gitignore | 2 ++
 1 file changed, 2 insertions(+)

index 7fac5b3c74..b9fa0354dd 100644
@@ -7,6 +7,7 @@
 #
 .*
 *.o
+*.so
 *.o.*
 *.a
 *.s

@@ -15,6 +16,7 @@
 *.i
 *.lst
 *.order
+*.efi
 *.elf
 *.swp
 *.bin

2.11.0