cris: Mark _stext and _end as char-arrays, not single char variables

cris: Mark _stext and _end as char-arrays, not single char variables

Mark _stext and _end as character arrays instead of single
character variable, like include/asm-generic/sections.h does.

Signed-off-by: Masami Hiramatsu <[email protected]>
Cc: Ananth N Mavinakayanahalli <[email protected]>
Cc: Anil S Keshavamurthy <[email protected]>
Cc: Chris Zankel <[email protected]>
Cc: David S . Miller <[email protected]>
Cc: Francis Deslauriers <[email protected]>
Cc: Jesper Nilsson <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Max Filippov <[email protected]>
Cc: Mikael Starvik <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/150172782555.27216.2805751327900543374.stgit@devbox
Signed-off-by: Ingo Molnar <[email protected]>