ARM: shmobile: r8a7778/bockw: Move "select RENESAS_INTC_IRQPIN" under SoC

ARM: shmobile: r8a7778/bockw: Move "select RENESAS_INTC_IRQPIN" under SoC

Move the "select RENESAS_INTC_IRQPIN" from the two bockw-specific sections
to the one r8a7778-specific section, like is done for the other SoCs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
[horms+renesas@verge.net.au: Resolved conflict]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit e35db38d66d1e4007cfc1bb90a05e11b4aaee2a8)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>