DEVELOPERS: Add myself as a maintainer of fbgrab

Daniel's address is bouncing and my touch on fbgrab is now the most
recent one.

Signed-off-by: Timo Ketola <timo.ketola@exertus.fi>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -476,7 +476,6 @@ F:	package/log4cpp/
 
 N:	Daniel Nyström <daniel.nystrom@timeterminal.se>
 F:	package/e2tools/
-F:	package/fbgrab/
 
 N:	Daniel Price <daniel.price@gmail.com>
 F:	package/nodejs/
@@ -1819,6 +1818,9 @@ F:	toolchain/
 N:	Tiago Brusamarello <tiago.brusamarello@datacom.ind.br>
 F:	package/aer-inject/
 
+N:	Timo Ketola <timo.ketola@exertus.fi>
+F:	package/fbgrab/
+
 N:	Tzu-Jung Lee <roylee17@gmail.com>
 F:	package/dropwatch/
 F:	package/tstools/