ui: remove pointless double const in keymap declarations

clang does not like two const specifiers in one declaration, so
remove one to let clang compile kvmtool.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

ui/gtk3.c

diff --git a/ui/gtk3.c b/ui/gtk3.c
index b2335bc..1e08a8f 100644
--- a/ui/gtk3.c
+++ b/ui/gtk3.c
@@ -34,7 +34,7 @@
 	.type = SCANCODE_ESCAPED,	\
 }
 
-static const struct set2_scancode const keymap[256] = {
+static const struct set2_scancode keymap[256] = {
 	[9]	= DEFINE_SC(0x76),	/* <esc> */
 	[10]	= DEFINE_SC(0x16),	/* 1 */
 	[11]	= DEFINE_SC(0x1e),	/* 2 */

ui/sdl.c

diff --git a/ui/sdl.c b/ui/sdl.c
index a260002..f97a511 100644
--- a/ui/sdl.c
+++ b/ui/sdl.c
@@ -36,7 +36,7 @@
 	.type = SCANCODE_ESCAPED,\
 }
 
-static const struct set2_scancode const keymap[256] = {
+static const struct set2_scancode keymap[256] = {
 	[9]	= DEFINE_SC(0x76),	/* <esc> */
 	[10]	= DEFINE_SC(0x16),	/* 1 */
 	[11]	= DEFINE_SC(0x1e),	/* 2 */