arm: omap2: clksel: fix compile warningOrganization: Texas Instruments\n

Fix the following compile warning:
arch/arm/mach-omap2/clkt_clksel.c: In function '_get_div_and_fieldval':
arch/arm/mach-omap2/clkt_clksel.c:100:35: warning: 'max_clkr' may be
used uninitialized in this function

Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>