Add new Elixir macro

- Will be useful when adding my LEE Falcon boot slides to
  the boot time optimization slides

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>

common/common.sty

@@ -7,6 +7,7 @@
 \newcommand\projfunc[2]{\href{https://elixir.bootlin.com/#1/latest/ident/#2}{\codelink{#2()}}}
 \newcommand\projconfig[2]{\href{https://elixir.bootlin.com/#1/latest/K/ident/#2}{\codelink{#2}}}
 \newcommand\projconfigval[3]{\href{https://elixir.bootlin.com/#1/latest/K/ident/#2}{\codelink{#2=#3}}}
+\newcommand\projconfignotset[2]{\href{https://elixir.bootlin.com/#1/latest/K/ident/#2}{\codelink{## #2 is not set}}}
 
 % Linux Elixir commands
 \newcommand\kfunc[1]{\href{https://elixir.bootlin.com/linux/latest/ident/#1}{\codelink{#1()}}}
@@ -21,6 +22,7 @@
 \newcommand\ksubarch[1]{\href{https://elixir.bootlin.com/linux/latest/source/arch/#1/}{\codelink{#1}}}
 \newcommand\kconfig[1]{\href{https://elixir.bootlin.com/linux/latest/K/ident/#1}{\codelink{#1}}}
 \newcommand\kconfigval[2]{\href{https://elixir.bootlin.com/linux/latest/K/ident/#1}{\codelink{#1=#2}}}
+\newcommand\kconfignotset[1]{\href{https://elixir.bootlin.com/linux/latest/K/ident/#1}{\codelink{## #1 is not set}}}
 \newcommand\kdoctext[1]{\href{https://kernel.org/doc/Documentation/#1}{\codelink{Documentation/#1}}}
 \newcommand\kdochtml[1]{\href{https://www.kernel.org/doc/html/latest/#1.html}{\codelink{#1}}}
 \newcommand\kdochtmldir[1]{\href{https://www.kernel.org/doc/html/latest/#1/}{\codelink{#1/}}}