efi_selftest: unit test for EFI_SIMPLE_TEXT_INPUT_PROTOCOL

Provide a unit test for the EFI_SIMPLE_TEXT_INPUT_PROTOCOL.

The unicode character and the scan code are printed for text
input.

To run the test:

	setenv efi_selftest text input
	bootefi selftest

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index b975da2..2c44251 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -24,6 +24,7 @@
 efi_selftest_gop.o \
 efi_selftest_manageprotocols.o \
 efi_selftest_snp.o \
+efi_selftest_textinput.o \
 efi_selftest_textoutput.o \
 efi_selftest_tpl.o \
 efi_selftest_util.o \